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HDFS-8582. Support getting a list of reconfigurable config properties and do not generate spurious reconfig warnings (Lei (Eddy) Xu via Colin P. McCabe)

This commit is contained in:
Colin Patrick Mccabe 2015-06-19 19:14:05 -07:00
parent 55278c012f
commit d112d18324
10 changed files with 232 additions and 49 deletions
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14
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/conf/ReconfigurableBase.java
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@ -88,6 +88,11 @@ public abstract class ReconfigurableBase
reconfigurationUtil = Preconditions.checkNotNull(ru);
}
/**
* Create a new configuration.
*/
protected abstract Configuration getNewConf();
@VisibleForTesting
public Collection<PropertyChange> getChangedProperties(
Configuration newConf, Configuration oldConf) {
@ -108,17 +113,16 @@ public abstract class ReconfigurableBase
public void run() {
LOG.info("Starting reconfiguration task.");
Configuration oldConf = this.parent.getConf();
Configuration newConf = new Configuration();
Configuration newConf = this.parent.getNewConf();
Collection<PropertyChange> changes =
this.parent.getChangedProperties(newConf, oldConf);
Map<PropertyChange, Optional<String>> results = Maps.newHashMap();
for (PropertyChange change : changes) {
String errorMessage = null;
if (!this.parent.isPropertyReconfigurable(change.prop)) {
errorMessage = "Property " + change.prop +
" is not reconfigurable";
LOG.info(errorMessage);
results.put(change, Optional.of(errorMessage));
LOG.info(String.format(
"Property %s is not configurable: old value: %s, new value: %s",
change.prop, change.oldVal, change.newVal));
continue;
}
LOG.info("Change property: " + change.prop + " from \""

12
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/conf/TestReconfiguration.java
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@ -118,6 +118,11 @@ public class TestReconfiguration {
super(conf);
}
@Override
protected Configuration getNewConf() {
return new Configuration();
}
@Override
public Collection<String> getReconfigurableProperties() {
return Arrays.asList(PROP1, PROP2, PROP4);
@ -336,6 +341,11 @@ public class TestReconfiguration {
super(conf);
}
@Override
protected Configuration getNewConf() {
return new Configuration();
}
final CountDownLatch latch = new CountDownLatch(1);
@Override
@ -397,7 +407,7 @@ public class TestReconfiguration {
waitAsyncReconfigureTaskFinish(dummy);
ReconfigurationTaskStatus status = dummy.getReconfigurationTaskStatus();
assertEquals(3, status.getStatus().size());
assertEquals(2, status.getStatus().size());
for (Map.Entry<PropertyChange, Optional<String>> result :
status.getStatus().entrySet()) {
PropertyChange change = result.getKey();

4
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
View File

@ -659,6 +659,10 @@ Release 2.8.0 - UNRELEASED
HDFS-8605. Merge Refactor of DFSOutputStream from HDFS-7285 branch.
(vinayakumarb via wang)
HDFS-8582. Support getting a list of reconfigurable config properties and
do not generate spurious reconfig warnings (Lei (Eddy) Xu via Colin P.
McCabe)
OPTIMIZATIONS
HDFS-8026. Trace FSOutputSummer#writeChecksumChunks rather than

5
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocol/ClientDatanodeProtocol.java
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@ -158,6 +158,11 @@ public interface ClientDatanodeProtocol {
*/
ReconfigurationTaskStatus getReconfigurationStatus() throws IOException;
/**
* Get a list of allowed properties for reconfiguration.
*/
List<String> listReconfigurableProperties() throws IOException;
/**
* Trigger a new block report.
*/

19
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocolPB/ClientDatanodeProtocolServerSideTranslatorPB.java
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@ -44,6 +44,8 @@ import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetHdf
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetHdfsBlockLocationsResponseProto.Builder;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.ListReconfigurablePropertiesRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.ListReconfigurablePropertiesResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.ShutdownDatanodeRequestProto;
@ -208,6 +210,23 @@ public class ClientDatanodeProtocolServerSideTranslatorPB implements
return START_RECONFIG_RESP;
}
@Override
public ListReconfigurablePropertiesResponseProto listReconfigurableProperties(
RpcController controller,
ListReconfigurablePropertiesRequestProto request)
throws ServiceException {
ListReconfigurablePropertiesResponseProto.Builder builder =
ListReconfigurablePropertiesResponseProto.newBuilder();
try {
for (String name : impl.listReconfigurableProperties()) {
builder.addName(name);
}
} catch (IOException e) {
throw new ServiceException(e);
}
return builder.build();
}
@Override
public GetReconfigurationStatusResponseProto getReconfigurationStatus(
RpcController unused, GetReconfigurationStatusRequestProto request)

19
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/protocolPB/ClientDatanodeProtocolTranslatorPB.java
View File

@ -52,6 +52,8 @@ import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetDat
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetHdfsBlockLocationsRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetHdfsBlockLocationsResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReplicaVisibleLengthRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.ListReconfigurablePropertiesRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.ListReconfigurablePropertiesResponseProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.RefreshNamenodesRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReconfigurationStatusRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetReconfigurationStatusResponseProto;
@ -59,7 +61,6 @@ import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.GetRec
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.ShutdownDatanodeRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.StartReconfigurationRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.TriggerBlockReportRequestProto;
import org.apache.hadoop.hdfs.protocol.proto.ClientDatanodeProtocolProtos.TriggerBlockReportResponseProto;
import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier;
import org.apache.hadoop.ipc.ProtobufHelper;
import org.apache.hadoop.ipc.ProtobufRpcEngine;
@ -101,6 +102,9 @@ public class ClientDatanodeProtocolTranslatorPB implements
GetReconfigurationStatusRequestProto.newBuilder().build();
private final static StartReconfigurationRequestProto VOID_START_RECONFIG =
StartReconfigurationRequestProto.newBuilder().build();
private static final ListReconfigurablePropertiesRequestProto
VOID_LIST_RECONFIGURABLE_PROPERTIES =
ListReconfigurablePropertiesRequestProto.newBuilder().build();
public ClientDatanodeProtocolTranslatorPB(DatanodeID datanodeid,
Configuration conf, int socketTimeout, boolean connectToDnViaHostname,
@ -337,6 +341,19 @@ public class ClientDatanodeProtocolTranslatorPB implements
return new ReconfigurationTaskStatus(startTime, endTime, statusMap);
}
@Override
public List<String> listReconfigurableProperties()
throws IOException {
ListReconfigurablePropertiesResponseProto response;
try {
response = rpcProxy.listReconfigurableProperties(NULL_CONTROLLER,
VOID_LIST_RECONFIGURABLE_PROPERTIES);
return response.getNameList();
} catch (ServiceException e) {
throw ProtobufHelper.getRemoteException(e);
}
}
@Override
public void triggerBlockReport(BlockReportOptions options)
throws IOException {

22
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
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@ -272,6 +272,11 @@ public class DataNode extends ReconfigurableBase
static final int CURRENT_BLOCK_FORMAT_VERSION = 1;
/** A list of property that are reconfigurable at runtime. */
private static final List<String> RECONFIGURABLE_PROPERTIES =
Collections.unmodifiableList(
Arrays.asList(DFS_DATANODE_DATA_DIR_KEY));
/**
* Use {@link NetUtils#createSocketAddr(String)} instead.
*/
@ -449,6 +454,11 @@ public class DataNode extends ReconfigurableBase
});
}
@Override // ReconfigurableBase
protected Configuration getNewConf() {
return new HdfsConfiguration();
}
@Override
public void reconfigurePropertyImpl(String property, String newVal)
throws ReconfigurationException {
@ -469,11 +479,9 @@ public class DataNode extends ReconfigurableBase
/**
* Get a list of the keys of the re-configurable properties in configuration.
*/
@Override
@Override // Reconfigurable
public Collection<String> getReconfigurableProperties() {
List<String> reconfigurable =
Collections.unmodifiableList(Arrays.asList(DFS_DATANODE_DATA_DIR_KEY));
return reconfigurable;
return RECONFIGURABLE_PROPERTIES;
}
/**
@ -3051,6 +3059,12 @@ public class DataNode extends ReconfigurableBase
return getReconfigurationTaskStatus();
}
@Override // ClientDatanodeProtocol
public List<String> listReconfigurableProperties()
throws IOException {
return RECONFIGURABLE_PROPERTIES;
}
@Override // ClientDatanodeProtocol
public void triggerBlockReport(BlockReportOptions options)
throws IOException {

57
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/tools/DFSAdmin.java
View File

@ -407,7 +407,7 @@ public class DFSAdmin extends FsShell {
"\t[-refreshSuperUserGroupsConfiguration]\n" +
"\t[-refreshCallQueue]\n" +
"\t[-refresh <host:ipc_port> <key> [arg1..argn]\n" +
"\t[-reconfig <datanode|...> <host:ipc_port> <start|status>]\n" +
"\t[-reconfig <datanode|...> <host:ipc_port> <start|status|properties>]\n" +
"\t[-printTopology]\n" +
"\t[-refreshNamenodes datanode_host:ipc_port]\n"+
"\t[-deleteBlockPool datanode_host:ipc_port blockpoolId [force]]\n"+
@ -979,8 +979,9 @@ public class DFSAdmin extends FsShell {
String refreshCallQueue = "-refreshCallQueue: Reload the call queue from config\n";
String reconfig = "-reconfig <datanode|...> <host:ipc_port> <start|status>:\n" +
"\tStarts reconfiguration or gets the status of an ongoing reconfiguration.\n" +
String reconfig = "-reconfig <datanode|...> <host:ipc_port> <start|status|properties>:\n" +
"\tStarts or gets the status of a reconfiguration operation, \n" +
"\tor gets a list of reconfigurable properties.\n" +
"\tThe second parameter specifies the node type.\n" +
"\tCurrently, only reloading DataNode's configuration is supported.\n";
@ -1439,6 +1440,9 @@ public class DFSAdmin extends FsShell {
return startReconfiguration(nodeType, address);
} else if ("status".equals(op)) {
return getReconfigurationStatus(nodeType, address, System.out, System.err);
} else if ("properties".equals(op)) {
return getReconfigurableProperties(
nodeType, address, System.out, System.err);
}
System.err.println("Unknown operation: " + op);
return -1;
@ -1476,18 +1480,24 @@ public class DFSAdmin extends FsShell {
out.println(" and finished at " +
new Date(status.getEndTime()).toString() + ".");
if (status.getStatus() == null) {
// Nothing to report.
return 0;
}
for (Map.Entry<PropertyChange, Optional<String>> result :
status.getStatus().entrySet()) {
if (!result.getValue().isPresent()) {
out.print("SUCCESS: ");
} else {
out.print("FAILED: ");
}
out.printf("Change property %s%n\tFrom: \"%s\"%n\tTo: \"%s\"%n",
out.printf(
"SUCCESS: Changed property %s%n\tFrom: \"%s\"%n\tTo: \"%s\"%n",
result.getKey().prop, result.getKey().oldVal,
result.getKey().newVal);
if (result.getValue().isPresent()) {
out.println("\tError: " + result.getValue().get() + ".");
} else {
final String errorMsg = result.getValue().get();
out.printf(
"FAILED: Change property %s%n\tFrom: \"%s\"%n\tTo: \"%s\"%n",
result.getKey().prop, result.getKey().oldVal,
result.getKey().newVal);
out.println("\tError: " + errorMsg + ".");
}
}
} catch (IOException e) {
@ -1495,7 +1505,32 @@ public class DFSAdmin extends FsShell {
return 1;
}
} else {
err.println("Node type " + nodeType + " does not support reconfiguration.");
err.println("Node type " + nodeType +
" does not support reconfiguration.");
return 1;
}
return 0;
}
int getReconfigurableProperties(String nodeType, String address,
PrintStream out, PrintStream err) throws IOException {
if ("datanode".equals(nodeType)) {
ClientDatanodeProtocol dnProxy = getDataNodeProxy(address);
try {
List<String> properties =
dnProxy.listReconfigurableProperties();
out.println(
"Configuration properties that are allowed to be reconfigured:");
for (String name : properties) {
out.println(name);
}
} catch (IOException e) {
err.println("DataNode reconfiguration: " + e + ".");
return 1;
}
} else {
err.println("Node type " + nodeType +
" does not support reconfiguration.");
return 1;
}
return 0;

12
hadoop-hdfs-project/hadoop-hdfs/src/main/proto/ClientDatanodeProtocol.proto
View File

@ -180,6 +180,14 @@ message GetReconfigurationStatusResponseProto {
repeated GetReconfigurationStatusConfigChangeProto changes = 3;
}
message ListReconfigurablePropertiesRequestProto {
}
/** Query the reconfigurable properties on DataNode. */
message ListReconfigurablePropertiesResponseProto {
repeated string name = 1;
}
/**
* Protocol used from client to the Datanode.
* See the request and response for details of rpc call.
@ -230,6 +238,10 @@ service ClientDatanodeProtocolService {
rpc startReconfiguration(StartReconfigurationRequestProto)
returns(StartReconfigurationResponseProto);
rpc listReconfigurableProperties(
ListReconfigurablePropertiesRequestProto)
returns(ListReconfigurablePropertiesResponseProto);
rpc triggerBlockReport(TriggerBlockReportRequestProto)
returns(TriggerBlockReportResponseProto);
}

105
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/tools/TestDFSAdmin.java
View File

@ -22,6 +22,7 @@ import static org.apache.hadoop.hdfs.DFSConfigKeys.DFS_DATANODE_DATA_DIR_KEY;
import com.google.common.collect.Lists;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.conf.ReconfigurationUtil;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.MiniDFSCluster;
import org.apache.hadoop.hdfs.server.common.Storage;
import org.apache.hadoop.hdfs.server.datanode.DataNode;
@ -42,6 +43,7 @@ import static org.hamcrest.CoreMatchers.allOf;
import static org.hamcrest.CoreMatchers.anyOf;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.not;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import static org.hamcrest.CoreMatchers.containsString;
@ -50,18 +52,17 @@ import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
public class TestDFSAdmin {
private Configuration conf = null;
private MiniDFSCluster cluster;
private DFSAdmin admin;
private DataNode datanode;
@Before
public void setUp() throws Exception {
Configuration conf = new Configuration();
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1).build();
cluster.waitActive();
conf = new Configuration();
restartCluster();
admin = new DFSAdmin();
datanode = cluster.getDataNodes().get(0);
}
@After
@ -72,6 +73,15 @@ public class TestDFSAdmin {
}
}
private void restartCluster() throws IOException {
if (cluster != null) {
cluster.shutdown();
}
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1).build();
cluster.waitActive();
datanode = cluster.getDataNodes().get(0);
}
private List<String> getReconfigureStatus(String nodeType, String address)
throws IOException {
ByteArrayOutputStream bufOut = new ByteArrayOutputStream();
@ -87,16 +97,26 @@ public class TestDFSAdmin {
return outputs;
}
@Test(timeout = 30000)
public void testGetReconfigureStatus()
/**
* Test reconfiguration and check the status outputs.
* @param expectedSuccuss set true if the reconfiguration task should success.
* @throws IOException
* @throws InterruptedException
*/
private void testGetReconfigurationStatus(boolean expectedSuccuss)
throws IOException, InterruptedException {
ReconfigurationUtil ru = mock(ReconfigurationUtil.class);
datanode.setReconfigurationUtil(ru);
List<ReconfigurationUtil.PropertyChange> changes =
new ArrayList<ReconfigurationUtil.PropertyChange>();
new ArrayList<>();
File newDir = new File(cluster.getDataDirectory(), "data_new");
if (expectedSuccuss) {
newDir.mkdirs();
} else {
// Inject failure.
newDir.createNewFile();
}
changes.add(new ReconfigurationUtil.PropertyChange(
DFS_DATANODE_DATA_DIR_KEY, newDir.toString(),
datanode.getConf().get(DFS_DATANODE_DATA_DIR_KEY)));
@ -121,31 +141,74 @@ public class TestDFSAdmin {
Thread.sleep(100);
}
assertTrue(count > 0);
assertThat(outputs.size(), is(8)); // 3 (SUCCESS) + 4 (FAILED)
if (expectedSuccuss) {
assertThat(outputs.size(), is(4));
} else {
assertThat(outputs.size(), is(6));
}
List<StorageLocation> locations = DataNode.getStorageLocations(
datanode.getConf());
if (expectedSuccuss) {
assertThat(locations.size(), is(1));
assertThat(locations.get(0).getFile(), is(newDir));
// Verify the directory is appropriately formatted.
assertTrue(new File(newDir, Storage.STORAGE_DIR_CURRENT).isDirectory());
} else {
assertTrue(locations.isEmpty());
}
int successOffset = outputs.get(1).startsWith("SUCCESS:") ? 1 : 5;
int failedOffset = outputs.get(1).startsWith("FAILED:") ? 1: 4;
assertThat(outputs.get(successOffset),
containsString("Change property " + DFS_DATANODE_DATA_DIR_KEY));
assertThat(outputs.get(successOffset + 1),
int offset = 1;
if (expectedSuccuss) {
assertThat(outputs.get(offset),
containsString("SUCCESS: Changed property " +
DFS_DATANODE_DATA_DIR_KEY));
} else {
assertThat(outputs.get(offset),
containsString("FAILED: Change property " +
DFS_DATANODE_DATA_DIR_KEY));
}
assertThat(outputs.get(offset + 1),
is(allOf(containsString("From:"), containsString("data1"),
containsString("data2"))));
assertThat(outputs.get(successOffset + 2),
assertThat(outputs.get(offset + 2),
is(not(anyOf(containsString("data1"), containsString("data2")))));
assertThat(outputs.get(successOffset + 2),
assertThat(outputs.get(offset + 2),
is(allOf(containsString("To"), containsString("data_new"))));
assertThat(outputs.get(failedOffset),
containsString("Change property randomKey"));
assertThat(outputs.get(failedOffset + 1),
containsString("From: \"old456\""));
assertThat(outputs.get(failedOffset + 2),
containsString("To: \"new123\""));
}
@Test(timeout = 30000)
public void testGetReconfigurationStatus()
throws IOException, InterruptedException {
testGetReconfigurationStatus(true);
restartCluster();
testGetReconfigurationStatus(false);
}
private List<String> getReconfigurationAllowedProperties(
String nodeType, String address)
throws IOException {
ByteArrayOutputStream bufOut = new ByteArrayOutputStream();
PrintStream out = new PrintStream(bufOut);
ByteArrayOutputStream bufErr = new ByteArrayOutputStream();
PrintStream err = new PrintStream(bufErr);
admin.getReconfigurableProperties(nodeType, address, out, err);
Scanner scanner = new Scanner(bufOut.toString());
List<String> outputs = Lists.newArrayList();
while (scanner.hasNextLine()) {
outputs.add(scanner.nextLine());
}
return outputs;
}
@Test(timeout = 30000)
public void testGetReconfigAllowedProperties() throws IOException {
final int port = datanode.getIpcPort();
final String address = "localhost:" + port;
List<String> outputs =
getReconfigurationAllowedProperties("datanode", address);
assertEquals(2, outputs.size());
assertEquals(DFSConfigKeys.DFS_DATANODE_DATA_DIR_KEY,
outputs.get(1));
}
}