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HBASE-12844 ServerManager.isServerReacable() should sleep between retries

This commit is contained in:
Enis Soztutar 2015-01-14 15:45:46 -08:00
parent 7e872a81a9
commit 51575197de
2 changed files with 25 additions and 10 deletions
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24
hbase-server/src/main/java/org/apache/hadoop/hbase/master/ServerManager.java
View File

@ -63,6 +63,8 @@ import org.apache.hadoop.hbase.regionserver.HRegionServer;
import org.apache.hadoop.hbase.regionserver.RegionOpeningState;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.Pair;
import org.apache.hadoop.hbase.util.RetryCounter;
import org.apache.hadoop.hbase.util.RetryCounterFactory;
import org.apache.hadoop.hbase.zookeeper.ZKUtil;
import org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher;
import org.apache.zookeeper.KeeperException;
@ -141,6 +143,8 @@ public class ServerManager {
private final long maxSkew;
private final long warningSkew;
private final RetryCounterFactory pingRetryCounterFactory;
/**
* Set of region servers which are dead but not processed immediately. If one
* server died before master enables ServerShutdownHandler, the server will be
@ -199,6 +203,11 @@ public class ServerManager {
maxSkew = c.getLong("hbase.master.maxclockskew", 30000);
warningSkew = c.getLong("hbase.master.warningclockskew", 10000);
this.connection = connect ? (ClusterConnection)ConnectionFactory.createConnection(c) : null;
int pingMaxAttempts = Math.max(1, master.getConfiguration().getInt(
"hbase.master.maximum.ping.server.attempts", 10));
int pingSleepInterval = Math.max(1, master.getConfiguration().getInt(
"hbase.master.ping.server.retry.sleep.interval", 100));
this.pingRetryCounterFactory = new RetryCounterFactory(pingMaxAttempts, pingSleepInterval);
}
/**
@ -793,9 +802,9 @@ public class ServerManager {
*/
public boolean isServerReachable(ServerName server) {
if (server == null) throw new NullPointerException("Passed server is null");
int maximumAttempts = Math.max(1, master.getConfiguration().getInt(
"hbase.master.maximum.ping.server.attempts", 10));
for (int i = 0; i < maximumAttempts; i++) {
RetryCounter retryCounter = pingRetryCounterFactory.create();
while (retryCounter.shouldRetry()) {
try {
AdminService.BlockingInterface admin = getRsAdmin(server);
if (admin != null) {
@ -804,8 +813,13 @@ public class ServerManager {
&& server.getStartcode() == info.getServerName().getStartCode();
}
} catch (IOException ioe) {
LOG.debug("Couldn't reach " + server + ", try=" + i
+ " of " + maximumAttempts, ioe);
LOG.debug("Couldn't reach " + server + ", try=" + retryCounter.getAttemptTimes()
+ " of " + retryCounter.getMaxAttempts(), ioe);
try {
retryCounter.sleepUntilNextRetry();
} catch(InterruptedException ie) {
Thread.currentThread().interrupt();
}
}
}
return false;

11
hbase-server/src/test/java/org/apache/hadoop/hbase/master/TestAssignmentManagerOnCluster.java
View File

@ -52,7 +52,6 @@ import org.apache.hadoop.hbase.UnknownRegionException;
import org.apache.hadoop.hbase.Waiter;
import org.apache.hadoop.hbase.client.Admin;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.Table;
import org.apache.hadoop.hbase.coordination.ZkCoordinatedStateManager;
@ -98,6 +97,8 @@ public class TestAssignmentManagerOnCluster {
MyRegionObserver.class, RegionObserver.class);
// Reduce the maximum attempts to speed up the test
conf.setInt("hbase.assignment.maximum.attempts", 3);
conf.setInt("hbase.master.maximum.ping.server.attempts", 3);
conf.setInt("hbase.master.ping.server.retry.sleep.interval", 1);
TEST_UTIL.startMiniCluster(1, 4, null, MyMaster.class, MyRegionServer.class);
admin = TEST_UTIL.getHBaseAdmin();
@ -205,7 +206,7 @@ public class TestAssignmentManagerOnCluster {
TEST_UTIL.deleteTable(Bytes.toBytes(table));
}
}
/**
* This tests region assignment on a simulated restarted server
*/
@ -1087,7 +1088,7 @@ public class TestAssignmentManagerOnCluster {
cluster.startRegionServer();
}
}
/**
* Test that region state transition call is idempotent
*/
@ -1121,7 +1122,7 @@ public class TestAssignmentManagerOnCluster {
TEST_UTIL.deleteTable(Bytes.toBytes(table));
}
}
/**
* Test concurrent updates to meta when meta is not on master
* @throws Exception
@ -1177,7 +1178,7 @@ public class TestAssignmentManagerOnCluster {
assertTrue(count == 100);
rss.stop();
}
static class MyLoadBalancer extends StochasticLoadBalancer {
// For this region, if specified, always assign to nowhere
static volatile String controledRegion = null;