HBASE-4014 Coprocessors: Flag the presence of coprocessors in logged

exceptions (Eugene Koontz)


git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1175292 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Zhihong Yu 2011-09-25 03:46:53 +00:00
parent b263f75423
commit 581421a6b2
11 changed files with 1220 additions and 92 deletions

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@ -5,6 +5,10 @@ Release 0.93.0 - Unreleased
(dhruba borthakur)
HBASE-4461 Expose getRowOrBefore via Thrift (jgray)
BUGS
HBASE-4014 Coprocessors: Flag the presence of coprocessors in logged
exceptions (Eugene Koontz)
Release 0.92.0 - Unreleased
INCOMPATIBLE CHANGES
HBASE-2002 Coprocessors: Client side support; Support RPC interface

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@ -27,6 +27,7 @@ import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.Coprocessor;
import org.apache.hadoop.hbase.CoprocessorEnvironment;
import org.apache.hadoop.hbase.DoNotRetryIOException;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.client.*;
@ -35,6 +36,7 @@ import org.apache.hadoop.hbase.ipc.CoprocessorProtocol;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.SortedCopyOnWriteSet;
import org.apache.hadoop.hbase.util.VersionInfo;
import org.apache.hadoop.hbase.Server;
import java.io.File;
import java.io.IOException;
@ -71,6 +73,12 @@ public abstract class CoprocessorHost<E extends CoprocessorEnvironment> {
pathPrefix = UUID.randomUUID().toString();
}
private static Set<String> coprocessorNames =
Collections.synchronizedSet(new HashSet<String>());
public static Set<String> getLoadedCoprocessors() {
return coprocessorNames;
}
/**
* Load system coprocessors. Read the class names from configuration.
* Called by constructor.
@ -156,7 +164,7 @@ public abstract class CoprocessorHost<E extends CoprocessorEnvironment> {
// load the jar and get the implementation main class
String cp = System.getProperty("java.class.path");
// NOTE: Path.toURL is deprecated (toURI instead) but the URLClassLoader
// unsuprisingly wants URLs, not URIs; so we will use the deprecated
// unsurprisingly wants URLs, not URIs; so we will use the deprecated
// method which returns URLs for as long as it is available
List<URL> paths = new ArrayList<URL>();
paths.add(new File(dst.toString()).getCanonicalFile().toURL());
@ -213,6 +221,9 @@ public abstract class CoprocessorHost<E extends CoprocessorEnvironment> {
if (env instanceof Environment) {
((Environment)env).startup();
}
// HBASE-4014: maintain list of loaded coprocessors for later crash analysis
// if server (master or regionserver) aborts.
coprocessorNames.add(implClass.getName());
return env;
}
@ -576,4 +587,65 @@ public abstract class CoprocessorHost<E extends CoprocessorEnvironment> {
return new HTableWrapper(tableName);
}
}
protected void abortServer(final String service,
final Server server,
final CoprocessorEnvironment environment,
final Throwable e) {
String coprocessorName = (environment.getInstance()).toString();
server.abort("Aborting service: " + service + " running on : "
+ server.getServerName() + " because coprocessor: "
+ coprocessorName + " threw an exception.", e);
}
protected void abortServer(final CoprocessorEnvironment environment,
final Throwable e) {
String coprocessorName = (environment.getInstance()).toString();
LOG.error("The coprocessor: " + coprocessorName + " threw an unexpected " +
"exception: " + e + ", but there's no specific implementation of " +
" abortServer() for this coprocessor's environment.");
}
/**
* This is used by coprocessor hooks which are declared to throw IOException
* (or its subtypes). For such hooks, we should handle throwable objects
* depending on the Throwable's type. Those which are instances of
* IOException should be passed on to the client. This is in conformance with
* the HBase idiom regarding IOException: that it represents a circumstance
* that should be passed along to the client for its own handling. For
* example, a coprocessor that implements access controls would throw a
* subclass of IOException, such as AccessDeniedException, in its preGet()
* method to prevent an unauthorized client's performing a Get on a particular
* table.
* @param env Coprocessor Environment
* @param e Throwable object thrown by coprocessor.
* @exception IOException Exception
*/
protected void handleCoprocessorThrowable(final CoprocessorEnvironment env,
final Throwable e)
throws IOException {
if (e instanceof IOException) {
throw (IOException)e;
}
// If we got here, e is not an IOException. A loaded coprocessor has a
// fatal bug, and the server (master or regionserver) should remove the
// faulty coprocessor from its set of active coprocessors. Setting
// 'hbase.coprocessor.abortonerror' to true will cause abortServer(),
// which may be useful in development and testing environments where
// 'failing fast' for error analysis is desired.
if (env.getConfiguration().getBoolean("hbase.coprocessor.abortonerror",false)) {
// server is configured to abort.
abortServer(env, e);
} else {
LOG.error("Removing coprocessor '" + env.toString() + "' from " +
"environment because it threw: " + e,e);
coprocessors.remove(env);
throw new DoNotRetryIOException("Coprocessor: '" + env.toString() +
"' threw: '" + e + "' and has been removed" + "from the active " +
"coprocessor set.", e);
}
}
}

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@ -56,6 +56,7 @@ import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.client.MetaScanner;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.MetaScanner.MetaScannerVisitor;
import org.apache.hadoop.hbase.coprocessor.CoprocessorHost;
import org.apache.hadoop.hbase.executor.ExecutorService;
import org.apache.hadoop.hbase.executor.ExecutorService.ExecutorType;
import org.apache.hadoop.hbase.ipc.HBaseRPC;
@ -1187,8 +1188,25 @@ implements HMasterInterface, HMasterRegionInterface, MasterServices, Server {
return fileSystemManager.getClusterId();
}
/**
* The set of loaded coprocessors is stored in a static set. Since it's
* statically allocated, it does not require that HMaster's cpHost be
* initialized prior to accessing it.
* @return a String representation of the set of names of the loaded
* coprocessors.
*/
public static String getLoadedCoprocessors() {
return CoprocessorHost.getLoadedCoprocessors().toString();
}
@Override
public void abort(final String msg, final Throwable t) {
if (cpHost != null) {
// HBASE-4014: dump a list of loaded coprocessors.
LOG.fatal("Master server abort: loaded coprocessors are: " +
getLoadedCoprocessors());
}
if (abortNow(msg, t)) {
if (t != null) LOG.fatal(msg, t);
else LOG.fatal(msg);

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@ -20,6 +20,8 @@
package org.apache.hadoop.hbase.master;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.*;
import org.apache.hadoop.hbase.coprocessor.*;
@ -34,6 +36,8 @@ import java.io.IOException;
public class MasterCoprocessorHost
extends CoprocessorHost<MasterCoprocessorHost.MasterEnvironment> {
private static final Log LOG = LogFactory.getLog(MasterCoprocessorHost.class);
/**
* Coprocessor environment extension providing access to master related
* services.
@ -69,6 +73,11 @@ public class MasterCoprocessorHost
masterServices);
}
@Override
protected void abortServer(final CoprocessorEnvironment env, final Throwable e) {
abortServer("master", masterServices, env, e);
}
/* Implementation of hooks for invoking MasterObservers */
void preCreateTable(HTableDescriptor htd, HRegionInfo[] regions)
throws IOException {
@ -76,7 +85,11 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).preCreateTable(ctx, htd, regions);
try {
((MasterObserver)env.getInstance()).preCreateTable(ctx, htd, regions);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -90,7 +103,11 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).postCreateTable(ctx, htd, regions);
try {
((MasterObserver)env.getInstance()).postCreateTable(ctx, htd, regions);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -103,7 +120,11 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).preDeleteTable(ctx, tableName);
try {
((MasterObserver)env.getInstance()).preDeleteTable(ctx, tableName);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -116,7 +137,11 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).postDeleteTable(ctx, tableName);
try {
((MasterObserver)env.getInstance()).postDeleteTable(ctx, tableName);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -130,7 +155,12 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).preModifyTable(ctx, tableName, htd);
try {
((MasterObserver)env.getInstance()).preModifyTable(ctx, tableName,
htd);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -144,7 +174,12 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).postModifyTable(ctx, tableName, htd);
try {
((MasterObserver)env.getInstance()).postModifyTable(ctx, tableName,
htd);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -159,7 +194,11 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).preAddColumn(ctx, tableName, column);
try {
((MasterObserver)env.getInstance()).preAddColumn(ctx, tableName, column);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
bypass |= ctx.shouldBypass();
if (ctx.shouldComplete()) {
break;
@ -175,7 +214,12 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).postAddColumn(ctx, tableName, column);
try {
((MasterObserver)env.getInstance()).postAddColumn(ctx, tableName,
column);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -190,8 +234,12 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).preModifyColumn(
try {
((MasterObserver)env.getInstance()).preModifyColumn(
ctx, tableName, descriptor);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
bypass |= ctx.shouldBypass();
if (ctx.shouldComplete()) {
break;
@ -207,8 +255,12 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).postModifyColumn(
ctx, tableName, descriptor);
try {
((MasterObserver)env.getInstance()).postModifyColumn(
ctx, tableName, descriptor);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -223,7 +275,11 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).preDeleteColumn(ctx, tableName, c);
try {
((MasterObserver)env.getInstance()).preDeleteColumn(ctx, tableName, c);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
bypass |= ctx.shouldBypass();
if (ctx.shouldComplete()) {
break;
@ -239,7 +295,12 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).postDeleteColumn(ctx, tableName, c);
try {
((MasterObserver)env.getInstance()).postDeleteColumn(ctx, tableName,
c);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -252,7 +313,11 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).preEnableTable(ctx, tableName);
try {
((MasterObserver)env.getInstance()).preEnableTable(ctx, tableName);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -265,7 +330,11 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).postEnableTable(ctx, tableName);
try {
((MasterObserver)env.getInstance()).postEnableTable(ctx, tableName);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -278,7 +347,11 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).preDisableTable(ctx, tableName);
try {
((MasterObserver)env.getInstance()).preDisableTable(ctx, tableName);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -291,7 +364,11 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).postDisableTable(ctx, tableName);
try {
((MasterObserver)env.getInstance()).postDisableTable(ctx, tableName);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -306,8 +383,12 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).preMove(
ctx, region, srcServer, destServer);
try {
((MasterObserver)env.getInstance()).preMove(
ctx, region, srcServer, destServer);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
bypass |= ctx.shouldBypass();
if (ctx.shouldComplete()) {
break;
@ -323,8 +404,12 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).postMove(
ctx, region, srcServer, destServer);
try {
((MasterObserver)env.getInstance()).postMove(
ctx, region, srcServer, destServer);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -338,7 +423,11 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver) env.getInstance()).preAssign(ctx, regionInfo);
try {
((MasterObserver) env.getInstance()).preAssign(ctx, regionInfo);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
bypass |= ctx.shouldBypass();
if (ctx.shouldComplete()) {
break;
@ -353,7 +442,11 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver) env.getInstance()).postAssign(ctx, regionInfo);
try {
((MasterObserver)env.getInstance()).postAssign(ctx, regionInfo);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -368,8 +461,12 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).preUnassign(
ctx, regionInfo, force);
try {
((MasterObserver)env.getInstance()).preUnassign(
ctx, regionInfo, force);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
bypass |= ctx.shouldBypass();
if (ctx.shouldComplete()) {
break;
@ -385,8 +482,12 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).postUnassign(
ctx, regionInfo, force);
try {
((MasterObserver)env.getInstance()).postUnassign(
ctx, regionInfo, force);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -400,7 +501,11 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).preBalance(ctx);
try {
((MasterObserver)env.getInstance()).preBalance(ctx);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
bypass |= ctx.shouldBypass();
if (ctx.shouldComplete()) {
break;
@ -415,7 +520,11 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).postBalance(ctx);
try {
((MasterObserver)env.getInstance()).postBalance(ctx);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -429,8 +538,12 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
balance = ((MasterObserver)env.getInstance()).preBalanceSwitch(
ctx, balance);
try {
balance = ((MasterObserver)env.getInstance()).preBalanceSwitch(
ctx, balance);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -445,8 +558,12 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).postBalanceSwitch(
ctx, oldValue, newValue);
try {
((MasterObserver)env.getInstance()).postBalanceSwitch(
ctx, oldValue, newValue);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -459,7 +576,11 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).preShutdown(ctx);
try {
((MasterObserver)env.getInstance()).preShutdown(ctx);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -472,7 +593,11 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).preStopMaster(ctx);
try {
((MasterObserver)env.getInstance()).preStopMaster(ctx);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -485,7 +610,11 @@ public class MasterCoprocessorHost
for (MasterEnvironment env: coprocessors) {
if (env.getInstance() instanceof MasterObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((MasterObserver)env.getInstance()).postStartMaster(ctx);
try {
((MasterObserver)env.getInstance()).postStartMaster(ctx);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}

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@ -92,6 +92,7 @@ import org.apache.hadoop.hbase.client.Row;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.client.coprocessor.Exec;
import org.apache.hadoop.hbase.client.coprocessor.ExecResult;
import org.apache.hadoop.hbase.coprocessor.CoprocessorHost;
import org.apache.hadoop.hbase.executor.ExecutorService;
import org.apache.hadoop.hbase.executor.ExecutorService.ExecutorType;
import org.apache.hadoop.hbase.filter.BinaryComparator;
@ -617,7 +618,7 @@ public class HRegionServer implements HRegionInterface, HBaseRPCErrorHandler,
try {
// Try and register with the Master; tell it we are here. Break if
// server is stopped or the clusterup flag is down of hdfs went wacky.
// server is stopped or the clusterup flag is down or hdfs went wacky.
while (keepLooping()) {
MapWritable w = reportForDuty();
if (w == null) {
@ -1506,6 +1507,11 @@ public class HRegionServer implements HRegionInterface, HBaseRPCErrorHandler,
}
this.abortRequested = true;
this.reservedSpace.clear();
// HBASE-4014: show list of coprocessors that were loaded to help debug
// regionserver crashes.Note that we're implicitly using
// java.util.HashSet's toString() method to print the coprocessor names.
LOG.fatal("RegionServer abort: loaded coprocessors are: " +
CoprocessorHost.getLoadedCoprocessors());
if (this.metrics != null) {
LOG.info("Dump of metrics: " + this.metrics);
}

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@ -31,6 +31,7 @@ import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.Coprocessor;
import org.apache.hadoop.hbase.CoprocessorEnvironment;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.client.*;
import org.apache.hadoop.hbase.coprocessor.*;
@ -196,6 +197,33 @@ public class RegionCoprocessorHost
rsServices);
}
@Override
protected void abortServer(final CoprocessorEnvironment env, final Throwable e) {
abortServer("regionserver", rsServices, env, e);
}
/**
* HBASE-4014 : This is used by coprocessor hooks which are not declared to throw exceptions.
*
* For example, {@link
* org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost#preOpen()} and
* {@link org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost#postOpen()} are such hooks.
*
* See also {@link org.apache.hadoop.hbase.master.MasterCoprocessorHost#handleCoprocessorThrowable()}
* @param env: The coprocessor that threw the exception.
* @param e: The exception that was thrown.
*/
private void handleCoprocessorThrowableNoRethrow(
final CoprocessorEnvironment env, final Throwable e) {
try {
handleCoprocessorThrowable(env,e);
} catch (IOException ioe) {
// We cannot throw exceptions from the caller hook, so ignore.
LOG.warn("handleCoprocessorThrowable() threw an IOException while attempting to handle Throwable " + e
+ ". Ignoring.",e);
}
}
/**
* Invoked before a region open
*/
@ -204,7 +232,11 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).preOpen(ctx);
try {
((RegionObserver)env.getInstance()).preOpen(ctx);
} catch (Throwable e) {
handleCoprocessorThrowableNoRethrow(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -220,7 +252,11 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).postOpen(ctx);
try {
((RegionObserver)env.getInstance()).postOpen(ctx);
} catch (Throwable e) {
handleCoprocessorThrowableNoRethrow(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -237,7 +273,11 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).preClose(ctx, abortRequested);
try {
((RegionObserver)env.getInstance()).preClose(ctx, abortRequested);
} catch (Throwable e) {
handleCoprocessorThrowableNoRethrow(env, e);
}
}
}
}
@ -251,7 +291,12 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).postClose(ctx, abortRequested);
try {
((RegionObserver)env.getInstance()).postClose(ctx, abortRequested);
} catch (Throwable e) {
handleCoprocessorThrowableNoRethrow(env, e);
}
}
shutdown(env);
}
@ -293,8 +338,12 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).postCompactSelection(
ctx, store, selected);
try {
((RegionObserver)env.getInstance()).postCompactSelection(
ctx, store, selected);
} catch (Throwable e) {
handleCoprocessorThrowableNoRethrow(env,e);
}
if (ctx.shouldComplete()) {
break;
}
@ -313,8 +362,12 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
scanner = ((RegionObserver)env.getInstance()).preCompact(
ctx, store, scanner);
try {
scanner = ((RegionObserver)env.getInstance()).preCompact(
ctx, store, scanner);
} catch (Throwable e) {
handleCoprocessorThrowableNoRethrow(env,e);
}
bypass |= ctx.shouldBypass();
if (ctx.shouldComplete()) {
break;
@ -334,7 +387,11 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).postCompact(ctx, store, resultFile);
try {
((RegionObserver)env.getInstance()).postCompact(ctx, store, resultFile);
} catch (Throwable e) {
handleCoprocessorThrowableNoRethrow(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -350,7 +407,11 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).preFlush(ctx);
try {
((RegionObserver)env.getInstance()).preFlush(ctx);
} catch (Throwable e) {
handleCoprocessorThrowableNoRethrow(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -366,7 +427,11 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).postFlush(ctx);
try {
((RegionObserver)env.getInstance()).postFlush(ctx);
} catch (Throwable e) {
handleCoprocessorThrowableNoRethrow(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -382,7 +447,11 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).preSplit(ctx);
try {
((RegionObserver)env.getInstance()).preSplit(ctx);
} catch (Throwable e) {
handleCoprocessorThrowableNoRethrow(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -400,7 +469,11 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).postSplit(ctx, l, r);
try {
((RegionObserver)env.getInstance()).postSplit(ctx, l, r);
} catch (Throwable e) {
handleCoprocessorThrowableNoRethrow(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -424,8 +497,12 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).preGetClosestRowBefore(ctx, row, family,
result);
try {
((RegionObserver)env.getInstance()).preGetClosestRowBefore(ctx, row,
family, result);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
bypass |= ctx.shouldBypass();
if (ctx.shouldComplete()) {
break;
@ -447,8 +524,12 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).postGetClosestRowBefore(ctx, row, family,
result);
try {
((RegionObserver)env.getInstance()).postGetClosestRowBefore(ctx, row,
family, result);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -468,7 +549,11 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).preGet(ctx, get, results);
try {
((RegionObserver)env.getInstance()).preGet(ctx, get, results);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
bypass |= ctx.shouldBypass();
if (ctx.shouldComplete()) {
break;
@ -490,7 +575,11 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).postGet(ctx, get, results);
try {
((RegionObserver)env.getInstance()).postGet(ctx, get, results);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -511,7 +600,11 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
exists = ((RegionObserver)env.getInstance()).preExists(ctx, get, exists);
try {
exists = ((RegionObserver)env.getInstance()).preExists(ctx, get, exists);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
bypass |= ctx.shouldBypass();
if (ctx.shouldComplete()) {
break;
@ -533,7 +626,11 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
exists = ((RegionObserver)env.getInstance()).postExists(ctx, get, exists);
try {
exists = ((RegionObserver)env.getInstance()).postExists(ctx, get, exists);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -555,7 +652,11 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).prePut(ctx, familyMap, writeToWAL);
try {
((RegionObserver)env.getInstance()).prePut(ctx, familyMap, writeToWAL);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
bypass |= ctx.shouldBypass();
if (ctx.shouldComplete()) {
break;
@ -576,7 +677,11 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).postPut(ctx, familyMap, writeToWAL);
try {
((RegionObserver)env.getInstance()).postPut(ctx, familyMap, writeToWAL);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -597,7 +702,11 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).preDelete(ctx, familyMap, writeToWAL);
try {
((RegionObserver)env.getInstance()).preDelete(ctx, familyMap, writeToWAL);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
bypass |= ctx.shouldBypass();
if (ctx.shouldComplete()) {
break;
@ -618,7 +727,11 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).postDelete(ctx, familyMap, writeToWAL);
try {
((RegionObserver)env.getInstance()).postDelete(ctx, familyMap, writeToWAL);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -647,8 +760,14 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
result = ((RegionObserver)env.getInstance()).preCheckAndPut(ctx, row, family,
qualifier, compareOp, comparator, put, result);
try {
result = ((RegionObserver)env.getInstance()).preCheckAndPut(ctx, row, family,
qualifier, compareOp, comparator, put, result);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
bypass |= ctx.shouldBypass();
if (ctx.shouldComplete()) {
break;
@ -676,8 +795,12 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
result = ((RegionObserver)env.getInstance()).postCheckAndPut(ctx, row,
family, qualifier, compareOp, comparator, put, result);
try {
result = ((RegionObserver)env.getInstance()).postCheckAndPut(ctx, row,
family, qualifier, compareOp, comparator, put, result);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -707,8 +830,12 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
result = ((RegionObserver)env.getInstance()).preCheckAndDelete(ctx, row,
family, qualifier, compareOp, comparator, delete, result);
try {
result = ((RegionObserver)env.getInstance()).preCheckAndDelete(ctx, row,
family, qualifier, compareOp, comparator, delete, result);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
bypass |= ctx.shouldBypass();
if (ctx.shouldComplete()) {
break;
@ -736,9 +863,13 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
result = ((RegionObserver)env.getInstance())
.postCheckAndDelete(ctx, row, family, qualifier, compareOp,
comparator, delete, result);
try {
result = ((RegionObserver)env.getInstance())
.postCheckAndDelete(ctx, row, family, qualifier, compareOp,
comparator, delete, result);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -765,8 +896,12 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
amount = ((RegionObserver)env.getInstance()).preIncrementColumnValue(ctx,
row, family, qualifier, amount, writeToWAL);
try {
amount = ((RegionObserver)env.getInstance()).preIncrementColumnValue(ctx,
row, family, qualifier, amount, writeToWAL);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
bypass |= ctx.shouldBypass();
if (ctx.shouldComplete()) {
break;
@ -793,8 +928,12 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
result = ((RegionObserver)env.getInstance()).postIncrementColumnValue(ctx,
row, family, qualifier, amount, writeToWAL, result);
try {
result = ((RegionObserver)env.getInstance()).postIncrementColumnValue(ctx,
row, family, qualifier, amount, writeToWAL, result);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -817,7 +956,11 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).preIncrement(ctx, increment, result);
try {
((RegionObserver)env.getInstance()).preIncrement(ctx, increment, result);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
bypass |= ctx.shouldBypass();
if (ctx.shouldComplete()) {
break;
@ -838,7 +981,11 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).postIncrement(ctx, increment, result);
try {
((RegionObserver)env.getInstance()).postIncrement(ctx, increment, result);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -859,7 +1006,11 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
s = ((RegionObserver)env.getInstance()).preScannerOpen(ctx, scan, s);
try {
s = ((RegionObserver)env.getInstance()).preScannerOpen(ctx, scan, s);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
bypass |= ctx.shouldBypass();
if (ctx.shouldComplete()) {
break;
@ -881,7 +1032,11 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
s = ((RegionObserver)env.getInstance()).postScannerOpen(ctx, scan, s);
try {
s = ((RegionObserver)env.getInstance()).postScannerOpen(ctx, scan, s);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -906,8 +1061,12 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
hasNext = ((RegionObserver)env.getInstance()).preScannerNext(ctx, s, results,
limit, hasNext);
try {
hasNext = ((RegionObserver)env.getInstance()).preScannerNext(ctx, s, results,
limit, hasNext);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
bypass |= ctx.shouldBypass();
if (ctx.shouldComplete()) {
break;
@ -932,8 +1091,12 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
hasMore = ((RegionObserver)env.getInstance()).postScannerNext(ctx, s,
results, limit, hasMore);
try {
hasMore = ((RegionObserver)env.getInstance()).postScannerNext(ctx, s,
results, limit, hasMore);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -954,7 +1117,11 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).preScannerClose(ctx, s);
try {
((RegionObserver)env.getInstance()).preScannerClose(ctx, s);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
bypass |= ctx.shouldBypass();
if (ctx.shouldComplete()) {
break;
@ -974,7 +1141,11 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).postScannerClose(ctx, s);
try {
((RegionObserver)env.getInstance()).postScannerClose(ctx, s);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
@ -996,14 +1167,17 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).preWALRestore(ctx, info, logKey,
logEdit);
try {
((RegionObserver)env.getInstance()).preWALRestore(ctx, info, logKey,
logEdit);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
bypass |= ctx.shouldBypass();
if (ctx.shouldComplete()) {
break;
}
}
}
return bypass;
}
@ -1020,13 +1194,16 @@ public class RegionCoprocessorHost
for (RegionEnvironment env: coprocessors) {
if (env.getInstance() instanceof RegionObserver) {
ctx = ObserverContext.createAndPrepare(env, ctx);
((RegionObserver)env.getInstance()).postWALRestore(ctx, info,
logKey, logEdit);
try {
((RegionObserver)env.getInstance()).postWALRestore(ctx, info,
logKey, logEdit);
} catch (Throwable e) {
handleCoprocessorThrowable(env, e);
}
if (ctx.shouldComplete()) {
break;
}
}
}
}
}

View File

@ -725,4 +725,15 @@
version is X.X.X-SNAPSHOT"
</description>
</property>
<property>
<name>hbase.coprocessor.abortonerror</name>
<value>false</value>
<description>
Set to true to cause the hosting server (master or regionserver) to
abort if a coprocessor throws a Throwable object that is not IOException or
a subclass of IOException. Setting it to true might be useful in development
environments where one wants to terminate the server as soon as possible to
simplify coprocessor failure analysis.
</description>
</property>
</configuration>

View File

@ -0,0 +1,228 @@
/*
* Copyright 2011 The Apache Software Foundation
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.coprocessor;
import java.io.IOException;
import java.io.InterruptedIOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.Abortable;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.MiniHBaseCluster;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.CoprocessorEnvironment;
import org.apache.hadoop.hbase.master.HMaster;
import org.apache.hadoop.hbase.master.MasterCoprocessorHost;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.zookeeper.ZooKeeperNodeTracker;
import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import static org.junit.Assert.*;
/**
* Tests unhandled exceptions thrown by coprocessors running on master.
* Expected result is that the master will abort with an informative
* error message describing the set of its loaded coprocessors for crash diagnosis.
* (HBASE-4014).
*/
public class TestMasterCoprocessorExceptionWithAbort {
public static class MasterTracker extends ZooKeeperNodeTracker {
public boolean masterZKNodeWasDeleted = false;
public MasterTracker(ZooKeeperWatcher zkw, String masterNode, Abortable abortable) {
super(zkw, masterNode, abortable);
}
@Override
public synchronized void nodeDeleted(String path) {
if (path.equals("/hbase/master")) {
masterZKNodeWasDeleted = true;
}
}
}
public static class CreateTableThread extends Thread {
HBaseTestingUtility UTIL;
public CreateTableThread(HBaseTestingUtility UTIL) {
this.UTIL = UTIL;
}
@Override
public void run() {
// create a table : master coprocessor will throw an exception and not
// catch it.
HTableDescriptor htd = new HTableDescriptor(TEST_TABLE);
htd.addFamily(new HColumnDescriptor(TEST_FAMILY));
try {
HBaseAdmin admin = UTIL.getHBaseAdmin();
admin.createTable(htd);
fail("BuggyMasterObserver failed to throw an exception.");
} catch (IOException e) {
assertEquals("HBaseAdmin threw an interrupted IOException as expected.",
e.getClass().getName(), "java.io.InterruptedIOException");
}
}
}
public static class BuggyMasterObserver extends BaseMasterObserver {
private boolean preCreateTableCalled;
private boolean postCreateTableCalled;
private boolean startCalled;
private boolean postStartMasterCalled;
@Override
public void postCreateTable(ObserverContext<MasterCoprocessorEnvironment> env,
HTableDescriptor desc, HRegionInfo[] regions) throws IOException {
// cause a NullPointerException and don't catch it: this will cause the
// master to abort().
Integer i;
i = null;
i = i++;
}
public boolean wasCreateTableCalled() {
return preCreateTableCalled && postCreateTableCalled;
}
@Override
public void postStartMaster(ObserverContext<MasterCoprocessorEnvironment> ctx)
throws IOException {
postStartMasterCalled = true;
}
public boolean wasStartMasterCalled() {
return postStartMasterCalled;
}
@Override
public void start(CoprocessorEnvironment env) throws IOException {
startCalled = true;
}
public boolean wasStarted() {
return startCalled;
}
}
private static HBaseTestingUtility UTIL = new HBaseTestingUtility();
private static byte[] TEST_TABLE = Bytes.toBytes("observed_table");
private static byte[] TEST_FAMILY = Bytes.toBytes("fam1");
@BeforeClass
public static void setupBeforeClass() throws Exception {
Configuration conf = UTIL.getConfiguration();
conf.set(CoprocessorHost.MASTER_COPROCESSOR_CONF_KEY,
BuggyMasterObserver.class.getName());
conf.set("hbase.coprocessor.abortonerror", "true");
UTIL.startMiniCluster(2);
}
@AfterClass
public static void teardownAfterClass() throws Exception {
UTIL.shutdownMiniCluster();
}
@Test(timeout=30000)
public void testExceptionFromCoprocessorWhenCreatingTable()
throws IOException {
MiniHBaseCluster cluster = UTIL.getHBaseCluster();
HMaster master = cluster.getMaster();
MasterCoprocessorHost host = master.getCoprocessorHost();
BuggyMasterObserver cp = (BuggyMasterObserver)host.findCoprocessor(
BuggyMasterObserver.class.getName());
assertFalse("No table created yet", cp.wasCreateTableCalled());
// set a watch on the zookeeper /hbase/master node. If the master dies,
// the node will be deleted.
ZooKeeperWatcher zkw = new ZooKeeperWatcher(UTIL.getConfiguration(),
"unittest", new Abortable() {
@Override
public void abort(String why, Throwable e) {
throw new RuntimeException("Fatal ZK error: " + why, e);
}
@Override
public boolean isAborted() {
return false;
}
});
MasterTracker masterTracker = new MasterTracker(zkw,"/hbase/master",
new Abortable() {
@Override
public void abort(String why, Throwable e) {
throw new RuntimeException("Fatal ZK master tracker error, why=", e);
}
@Override
public boolean isAborted() {
return false;
}
});
masterTracker.start();
zkw.registerListener(masterTracker);
// Test (part of the) output that should have be printed by master when it aborts:
// (namely the part that shows the set of loaded coprocessors).
// In this test, there is only a single coprocessor (BuggyMasterObserver).
assertTrue(master.getLoadedCoprocessors().
equals("[" +
TestMasterCoprocessorExceptionWithAbort.BuggyMasterObserver.class.getName() +
"]"));
CreateTableThread createTableThread = new CreateTableThread(UTIL);
// Attempting to create a table (using createTableThread above) triggers an NPE in BuggyMasterObserver.
// Master will then abort and the /hbase/master zk node will be deleted.
createTableThread.start();
// Wait up to 30 seconds for master's /hbase/master zk node to go away after master aborts.
for (int i = 0; i < 30; i++) {
if (masterTracker.masterZKNodeWasDeleted == true) {
break;
}
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
fail("InterruptedException while waiting for master zk node to "
+ "be deleted.");
}
}
assertTrue("Master aborted on coprocessor exception, as expected.",
masterTracker.masterZKNodeWasDeleted);
createTableThread.interrupt();
try {
createTableThread.join(1000);
} catch (InterruptedException e) {
assertTrue("Ignoring InterruptedException while waiting for " +
" createTableThread.join().", true);
}
}
}

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/*
* Copyright 2011 The Apache Software Foundation
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.coprocessor;
import java.io.IOException;
import java.io.InterruptedIOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.Abortable;
import org.apache.hadoop.hbase.HBaseTestingUtility;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HRegionInfo;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.MiniHBaseCluster;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.CoprocessorEnvironment;
import org.apache.hadoop.hbase.master.HMaster;
import org.apache.hadoop.hbase.master.MasterCoprocessorHost;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.zookeeper.ZooKeeperNodeTracker;
import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import static org.junit.Assert.*;
/**
* Tests unhandled exceptions thrown by coprocessors running on master.
* Expected result is that the master will remove the buggy coprocessor from
* its set of coprocessors and throw a org.apache.hadoop.hbase.DoNotRetryIOException
* back to the client.
* (HBASE-4014).
*/
public class TestMasterCoprocessorExceptionWithRemove {
public static class MasterTracker extends ZooKeeperNodeTracker {
public boolean masterZKNodeWasDeleted = false;
public MasterTracker(ZooKeeperWatcher zkw, String masterNode, Abortable abortable) {
super(zkw, masterNode, abortable);
}
@Override
public synchronized void nodeDeleted(String path) {
if (path.equals("/hbase/master")) {
masterZKNodeWasDeleted = true;
}
}
}
public static class BuggyMasterObserver extends BaseMasterObserver {
private boolean preCreateTableCalled;
private boolean postCreateTableCalled;
private boolean startCalled;
private boolean postStartMasterCalled;
@Override
public void postCreateTable(ObserverContext<MasterCoprocessorEnvironment> env,
HTableDescriptor desc, HRegionInfo[] regions) throws IOException {
// Cause a NullPointerException and don't catch it: this should cause the
// master to throw an o.apache.hadoop.hbase.DoNotRetryIOException to the
// client.
Integer i;
i = null;
i = i++;
}
public boolean wasCreateTableCalled() {
return preCreateTableCalled && postCreateTableCalled;
}
@Override
public void postStartMaster(ObserverContext<MasterCoprocessorEnvironment> ctx)
throws IOException {
postStartMasterCalled = true;
}
public boolean wasStartMasterCalled() {
return postStartMasterCalled;
}
@Override
public void start(CoprocessorEnvironment env) throws IOException {
startCalled = true;
}
public boolean wasStarted() {
return startCalled;
}
}
private static HBaseTestingUtility UTIL = new HBaseTestingUtility();
private static byte[] TEST_TABLE1 = Bytes.toBytes("observed_table1");
private static byte[] TEST_FAMILY1 = Bytes.toBytes("fam1");
private static byte[] TEST_TABLE2 = Bytes.toBytes("table2");
private static byte[] TEST_FAMILY2 = Bytes.toBytes("fam2");
@BeforeClass
public static void setupBeforeClass() throws Exception {
Configuration conf = UTIL.getConfiguration();
conf.set(CoprocessorHost.MASTER_COPROCESSOR_CONF_KEY,
BuggyMasterObserver.class.getName());
UTIL.startMiniCluster(2);
}
@AfterClass
public static void teardownAfterClass() throws Exception {
UTIL.shutdownMiniCluster();
}
@Test(timeout=30000)
public void testExceptionFromCoprocessorWhenCreatingTable()
throws IOException {
MiniHBaseCluster cluster = UTIL.getHBaseCluster();
HMaster master = cluster.getMaster();
MasterCoprocessorHost host = master.getCoprocessorHost();
BuggyMasterObserver cp = (BuggyMasterObserver)host.findCoprocessor(
BuggyMasterObserver.class.getName());
assertFalse("No table created yet", cp.wasCreateTableCalled());
// Set a watch on the zookeeper /hbase/master node. If the master dies,
// the node will be deleted.
// Master should *NOT* die:
// we are testing that the default setting of hbase.coprocessor.abortonerror
// =false
// is respected.
ZooKeeperWatcher zkw = new ZooKeeperWatcher(UTIL.getConfiguration(),
"unittest", new Abortable() {
@Override
public void abort(String why, Throwable e) {
throw new RuntimeException("Fatal ZK error: " + why, e);
}
@Override
public boolean isAborted() {
return false;
}
});
MasterTracker masterTracker = new MasterTracker(zkw,"/hbase/master",
new Abortable() {
@Override
public void abort(String why, Throwable e) {
throw new RuntimeException("Fatal Zookeeper tracker error, why=", e);
}
@Override
public boolean isAborted() {
return false;
}
});
masterTracker.start();
zkw.registerListener(masterTracker);
// Test (part of the) output that should have be printed by master when it aborts:
// (namely the part that shows the set of loaded coprocessors).
// In this test, there is only a single coprocessor (BuggyMasterObserver).
String coprocessorName =
BuggyMasterObserver.class.getName();
assertTrue(master.getLoadedCoprocessors().equals("[" + coprocessorName + "]"));
HTableDescriptor htd1 = new HTableDescriptor(TEST_TABLE1);
htd1.addFamily(new HColumnDescriptor(TEST_FAMILY1));
boolean threwDNRE = false;
try {
HBaseAdmin admin = UTIL.getHBaseAdmin();
admin.createTable(htd1);
} catch (IOException e) {
if (e.getClass().getName().equals("org.apache.hadoop.hbase.DoNotRetryIOException")) {
threwDNRE = true;
}
} finally {
assertTrue(threwDNRE);
}
// wait for a few seconds to make sure that the Master hasn't aborted.
try {
Thread.sleep(3000);
} catch (InterruptedException e) {
fail("InterruptedException while sleeping.");
}
assertFalse("Master survived coprocessor NPE, as expected.",
masterTracker.masterZKNodeWasDeleted);
String loadedCoprocessors = master.getLoadedCoprocessors();
assertTrue(loadedCoprocessors.equals("[" + coprocessorName + "]"));
// Verify that BuggyMasterObserver has been removed due to its misbehavior
// by creating another table: should not have a problem this time.
HTableDescriptor htd2 = new HTableDescriptor(TEST_TABLE2);
htd2.addFamily(new HColumnDescriptor(TEST_FAMILY2));
HBaseAdmin admin = UTIL.getHBaseAdmin();
try {
admin.createTable(htd2);
} catch (IOException e) {
fail("Failed to create table after buggy coprocessor removal: " + e);
}
}
}

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/*
* Copyright 2011 The Apache Software Foundation
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.coprocessor;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import java.util.concurrent.atomic.AtomicBoolean;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.*;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.regionserver.HRegionServer;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.JVMClusterUtil;
import org.apache.hadoop.hbase.zookeeper.ZooKeeperNodeTracker;
import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import static org.junit.Assert.*;
/**
* Tests unhandled exceptions thrown by coprocessors running on a regionserver..
* Expected result is that the regionserver will abort with an informative
* error message describing the set of its loaded coprocessors for crash
* diagnosis. (HBASE-4014).
*/
public class TestRegionServerCoprocessorExceptionWithAbort {
private static HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
@BeforeClass
public static void setupBeforeClass() throws Exception {
// set configure to indicate which cp should be loaded
Configuration conf = TEST_UTIL.getConfiguration();
conf.set(CoprocessorHost.REGION_COPROCESSOR_CONF_KEY,
BuggyRegionObserver.class.getName());
conf.set("hbase.coprocessor.abortonerror", "true");
TEST_UTIL.startMiniCluster(2);
}
@AfterClass
public static void teardownAfterClass() throws Exception {
TEST_UTIL.shutdownMiniCluster();
}
@Test(timeout=30000)
public void testExceptionFromCoprocessorDuringPut()
throws IOException {
// When we try to write to TEST_TABLE, the buggy coprocessor will
// cause a NullPointerException, which will cause the regionserver (which
// hosts the region we attempted to write to) to abort.
byte[] TEST_TABLE = Bytes.toBytes("observed_table");
byte[] TEST_FAMILY = Bytes.toBytes("aaa");
HTable table = TEST_UTIL.createTable(TEST_TABLE, TEST_FAMILY);
TEST_UTIL.createMultiRegions(table, TEST_FAMILY);
// Note which regionServer will abort (after put is attempted).
HRegionServer regionServer =
TEST_UTIL.getRSForFirstRegionInTable(TEST_TABLE);
try {
final byte[] ROW = Bytes.toBytes("aaa");
Put put = new Put(ROW);
put.add(TEST_FAMILY, ROW, ROW);
table.put(put);
} catch (IOException e) {
fail("put() failed: " + e);
}
// Wait up to 30 seconds for regionserver to abort.
boolean regionServerAborted = false;
for (int i = 0; i < 30; i++) {
if (regionServer.isAborted()) {
regionServerAborted = true;
break;
}
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
fail("InterruptedException while waiting for regionserver " +
"zk node to be deleted.");
}
}
assertTrue("RegionServer aborted on coprocessor exception, as expected.",
regionServerAborted);
}
public static class BuggyRegionObserver extends SimpleRegionObserver {
@Override
public void prePut(final ObserverContext<RegionCoprocessorEnvironment> c,
final Map<byte[], List<KeyValue>> familyMap,
final boolean writeToWAL) {
String tableName =
c.getEnvironment().getRegion().getRegionInfo().getTableNameAsString();
if (tableName.equals("observed_table")) {
Integer i = null;
i = i + 1;
}
}
}
}

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/*
* Copyright 2011 The Apache Software Foundation
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.coprocessor;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import java.util.concurrent.atomic.AtomicBoolean;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.*;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.RetriesExhaustedWithDetailsException;
import org.apache.hadoop.hbase.regionserver.HRegionServer;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.JVMClusterUtil;
import org.apache.hadoop.hbase.zookeeper.ZooKeeperNodeTracker;
import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import static org.junit.Assert.*;
/**
* Tests unhandled exceptions thrown by coprocessors running on regionserver.
* Expected result is that the master will remove the buggy coprocessor from
* its set of coprocessors and throw a org.apache.hadoop.hbase.DoNotRetryIOException
* back to the client.
* (HBASE-4014).
*/
public class TestRegionServerCoprocessorExceptionWithRemove {
public static class BuggyRegionObserver extends SimpleRegionObserver {
@Override
public void prePut(final ObserverContext<RegionCoprocessorEnvironment> c,
final Map<byte[], List<KeyValue>> familyMap,
final boolean writeToWAL) {
String tableName =
c.getEnvironment().getRegion().getRegionInfo().getTableNameAsString();
if (tableName.equals("observed_table")) {
Integer i = null;
i = i + 1;
}
}
}
private static HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
private static ZooKeeperWatcher zkw = null;
@BeforeClass
public static void setupBeforeClass() throws Exception {
// set configure to indicate which cp should be loaded
Configuration conf = TEST_UTIL.getConfiguration();
conf.set(CoprocessorHost.REGION_COPROCESSOR_CONF_KEY,
BuggyRegionObserver.class.getName());
TEST_UTIL.startMiniCluster(2);
}
@AfterClass
public static void teardownAfterClass() throws Exception {
TEST_UTIL.shutdownMiniCluster();
}
@Test(timeout=30000)
public void testExceptionFromCoprocessorDuringPut()
throws IOException {
// Set watches on the zookeeper nodes for all of the regionservers in the
// cluster. When we try to write to TEST_TABLE, the buggy coprocessor will
// cause a NullPointerException, which will cause the regionserver (which
// hosts the region we attempted to write to) to abort. In turn, this will
// cause the nodeDeleted() method of the DeadRegionServer tracker to
// execute, which will set the rsZKNodeDeleted flag to true, which will
// pass this test.
byte[] TEST_TABLE = Bytes.toBytes("observed_table");
byte[] TEST_FAMILY = Bytes.toBytes("aaa");
HTable table = TEST_UTIL.createTable(TEST_TABLE, TEST_FAMILY);
TEST_UTIL.createMultiRegions(table, TEST_FAMILY);
// Note which regionServer that should survive the buggy coprocessor's
// prePut().
HRegionServer regionServer =
TEST_UTIL.getRSForFirstRegionInTable(TEST_TABLE);
// same logic as {@link TestMasterCoprocessorExceptionWithRemove},
// but exception will be RetriesExhaustedWithDetailException rather
// than DoNotRetryIOException. The latter exception is what the RegionServer
// will have actually thrown, but the client will wrap this in a
// RetriesExhaustedWithDetailException.
// We will verify that "DoNotRetryIOException" appears in the text of the
// the exception's detailMessage.
boolean threwDNRE = false;
try {
final byte[] ROW = Bytes.toBytes("aaa");
Put put = new Put(ROW);
put.add(TEST_FAMILY, ROW, ROW);
table.put(put);
} catch (RetriesExhaustedWithDetailsException e) {
// below, could call instead :
// startsWith("Failed 1 action: DoNotRetryIOException.")
// But that might be too brittle if client-side
// DoNotRetryIOException-handler changes its message.
assertTrue(e.getMessage().contains("DoNotRetryIOException"));
threwDNRE = true;
} finally {
assertTrue(threwDNRE);
}
// Wait 3 seconds for the regionserver to abort: expected result is that
// it will survive and not abort.
for (int i = 0; i < 3; i++) {
assertFalse(regionServer.isAborted());
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
fail("InterruptedException while waiting for regionserver " +
"zk node to be deleted.");
}
}
}
}