[
https://issues.apache.org/jira/browse/HBASE-16350?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Enis Soztutar updated HBASE-16350:
----------------------------------
Description:
This came up during testing the ITBLL on a custom cluster.
Master aborts if WAL splitting fails:
{code}
2016-08-03 19:56:57,693 INFO
[B.priority.fifo.QRpcServer.handler=4,queue=0,port=20000] master.ServerManager:
Registering server=hbase-bug58335-6.openstacklocal,16020,1470254212713
2016-08-03 19:57:00,062 INFO [main-EventThread]
coordination.SplitLogManagerCoordination: task
/hbase-secure/splitWAL/WALs%2Fhbase-bug58335-6.openstacklocal%2C16020%2C1470253655579-splitting%2Fhbase-bug58335-6.openstacklocal%252C16020%252C1470253655579.default.1470253660327
entered state: ERR hbase-bug58335-4.openstacklocal,16020,1470253592920
2016-08-03 19:57:00,064 WARN [main-EventThread]
coordination.SplitLogManagerCoordination: Error splitting
/hbase-secure/splitWAL/WALs%2Fhbase-bug58335-6.openstacklocal%2C16020%2C1470253655579-splitting%2Fhbase-bug58335-6.openstacklocal%252C16020%252C1470253655579.default.1470253660327
2016-08-03 19:57:00,064 WARN
[MASTER_SERVER_OPERATIONS-hbase-bug58335-7:20000-0] master.SplitLogManager:
error while splitting logs in
[hdfs://hbase-bug58335-7.openstacklocal:8020/apps/hbase/data/WALs/hbase-bug58335-6.openstacklocal,16020,1470253655579-splitting]
installed = 1 but only 0 done
2016-08-03 19:57:00,065 ERROR
[MASTER_SERVER_OPERATIONS-hbase-bug58335-7:20000-0] executor.EventHandler:
Caught throwable while processing event M_SERVER_SHUTDOWN
java.io.IOException: failed log splitting for
hbase-bug58335-6.openstacklocal,16020,1470253655579, will retry
at
org.apache.hadoop.hbase.master.handler.ServerShutdownHandler.resubmit(ServerShutdownHandler.java:357)
at
org.apache.hadoop.hbase.master.handler.ServerShutdownHandler.process(ServerShutdownHandler.java:220)
at
org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:129)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.IOException: error or interrupted while splitting logs in
[hdfs://hbase-bug58335-7.openstacklocal:8020/apps/hbase/data/WALs/hbase-bug58335-6.openstacklocal,16020,1470253655579-splitting]
Task = installed = 1 done = 0 error = 1
at
org.apache.hadoop.hbase.master.SplitLogManager.splitLogDistributed(SplitLogManager.java:290)
at
org.apache.hadoop.hbase.master.MasterFileSystem.splitLog(MasterFileSystem.java:393)
at
org.apache.hadoop.hbase.master.MasterFileSystem.splitLog(MasterFileSystem.java:366)
at
org.apache.hadoop.hbase.master.MasterFileSystem.splitLog(MasterFileSystem.java:288)
at
org.apache.hadoop.hbase.master.handler.ServerShutdownHandler.process(ServerShutdownHandler.java:213)
... 4 more
2016-08-03 19:57:00,067 FATAL
[MASTER_SERVER_OPERATIONS-hbase-bug58335-7:20000-0] master.HMaster: Master
server abort: loaded coprocessors are:
[org.apache.ranger.authorization.hbase.RangerAuthorizationCoprocessor,
org.apache.hadoop.hbase.backup.master.BackupController]
2016-08-03 19:57:00,067 FATAL
[MASTER_SERVER_OPERATIONS-hbase-bug58335-7:20000-0] master.HMaster: Caught
throwable while processing event M_SERVER_SHUTDOWN
java.io.IOException: failed log splitting for
hbase-bug58335-6.openstacklocal,16020,1470253655579, will retry
at
org.apache.hadoop.hbase.master.handler.ServerShutdownHandler.resubmit(ServerShutdownHandler.java:357)
at
org.apache.hadoop.hbase.master.handler.ServerShutdownHandler.process(ServerShutdownHandler.java:220)
at
org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:129)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.io.IOException: error or interrupted while splitting logs in
[hdfs://hbase-bug58335-7.openstacklocal:8020/apps/hbase/data/WALs/hbase-bug58335-6.openstacklocal,16020,1470253655579-splitting]
Task = installed = 1 done = 0 error = 1
at
org.apache.hadoop.hbase.master.SplitLogManager.splitLogDistributed(SplitLogManager.java:290)
at
org.apache.hadoop.hbase.master.MasterFileSystem.splitLog(MasterFileSystem.java:393)
at
org.apache.hadoop.hbase.master.MasterFileSystem.splitLog(MasterFileSystem.java:366)
at
org.apache.hadoop.hbase.master.MasterFileSystem.splitLog(MasterFileSystem.java:288)
at
org.apache.hadoop.hbase.master.handler.ServerShutdownHandler.process(ServerShutdownHandler.java:213)
... 4 more
{code}
If we fail to split the WAL, we normally retry, but it seems that it is doing
this by throwing an exception:
{code}
private void resubmit(final ServerName serverName, IOException ex) throws
IOException {
// typecast to SSH so that we make sure that it is the SSH instance that
// gets submitted as opposed to MSSH or some other derived instance of SSH
this.services.getExecutorService().submit((ServerShutdownHandler) this);
this.deadServers.add(serverName);
throw new IOException("failed log splitting for " + serverName + ", will
retry", ex);
}
{code}
In erie, this patch: HBASE-14968 made the change that if the handler is
throwing an uncaught exception, we abort the server:
{code}
protected void handleException(Throwable t) {
String msg = "Caught throwable while processing event " + eventType;
LOG.error(msg, t);
if (server != null) {
server.abort(msg, t);
}
}
{code}
It seems that SSH, and some other handlers are throwing exceptions in valid
cases to retry the operations. We can undo the server.abort() call which was
originally added in HBASE-14968 for cases where unchecked exceptions like
ConcurrentModificationException, etc are not ignored.
> Undo server abort from HBASE-14968
> ----------------------------------
>
> Key: HBASE-16350
> URL: https://issues.apache.org/jira/browse/HBASE-16350
> Project: HBase
> Issue Type: Bug
> Reporter: Enis Soztutar
> Assignee: Enis Soztutar
>
> This came up during testing the ITBLL on a custom cluster.
> Master aborts if WAL splitting fails:
> {code}
> 2016-08-03 19:56:57,693 INFO
> [B.priority.fifo.QRpcServer.handler=4,queue=0,port=20000]
> master.ServerManager: Registering
> server=hbase-bug58335-6.openstacklocal,16020,1470254212713
> 2016-08-03 19:57:00,062 INFO [main-EventThread]
> coordination.SplitLogManagerCoordination: task
> /hbase-secure/splitWAL/WALs%2Fhbase-bug58335-6.openstacklocal%2C16020%2C1470253655579-splitting%2Fhbase-bug58335-6.openstacklocal%252C16020%252C1470253655579.default.1470253660327
> entered state: ERR hbase-bug58335-4.openstacklocal,16020,1470253592920
> 2016-08-03 19:57:00,064 WARN [main-EventThread]
> coordination.SplitLogManagerCoordination: Error splitting
> /hbase-secure/splitWAL/WALs%2Fhbase-bug58335-6.openstacklocal%2C16020%2C1470253655579-splitting%2Fhbase-bug58335-6.openstacklocal%252C16020%252C1470253655579.default.1470253660327
> 2016-08-03 19:57:00,064 WARN
> [MASTER_SERVER_OPERATIONS-hbase-bug58335-7:20000-0] master.SplitLogManager:
> error while splitting logs in
> [hdfs://hbase-bug58335-7.openstacklocal:8020/apps/hbase/data/WALs/hbase-bug58335-6.openstacklocal,16020,1470253655579-splitting]
> installed = 1 but only 0 done
> 2016-08-03 19:57:00,065 ERROR
> [MASTER_SERVER_OPERATIONS-hbase-bug58335-7:20000-0] executor.EventHandler:
> Caught throwable while processing event M_SERVER_SHUTDOWN
> java.io.IOException: failed log splitting for
> hbase-bug58335-6.openstacklocal,16020,1470253655579, will retry
> at
> org.apache.hadoop.hbase.master.handler.ServerShutdownHandler.resubmit(ServerShutdownHandler.java:357)
> at
> org.apache.hadoop.hbase.master.handler.ServerShutdownHandler.process(ServerShutdownHandler.java:220)
> at
> org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:129)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.io.IOException: error or interrupted while splitting logs in
> [hdfs://hbase-bug58335-7.openstacklocal:8020/apps/hbase/data/WALs/hbase-bug58335-6.openstacklocal,16020,1470253655579-splitting]
> Task = installed = 1 done = 0 error = 1
> at
> org.apache.hadoop.hbase.master.SplitLogManager.splitLogDistributed(SplitLogManager.java:290)
> at
> org.apache.hadoop.hbase.master.MasterFileSystem.splitLog(MasterFileSystem.java:393)
> at
> org.apache.hadoop.hbase.master.MasterFileSystem.splitLog(MasterFileSystem.java:366)
> at
> org.apache.hadoop.hbase.master.MasterFileSystem.splitLog(MasterFileSystem.java:288)
> at
> org.apache.hadoop.hbase.master.handler.ServerShutdownHandler.process(ServerShutdownHandler.java:213)
> ... 4 more
> 2016-08-03 19:57:00,067 FATAL
> [MASTER_SERVER_OPERATIONS-hbase-bug58335-7:20000-0] master.HMaster: Master
> server abort: loaded coprocessors are:
> [org.apache.ranger.authorization.hbase.RangerAuthorizationCoprocessor,
> org.apache.hadoop.hbase.backup.master.BackupController]
> 2016-08-03 19:57:00,067 FATAL
> [MASTER_SERVER_OPERATIONS-hbase-bug58335-7:20000-0] master.HMaster: Caught
> throwable while processing event M_SERVER_SHUTDOWN
> java.io.IOException: failed log splitting for
> hbase-bug58335-6.openstacklocal,16020,1470253655579, will retry
> at
> org.apache.hadoop.hbase.master.handler.ServerShutdownHandler.resubmit(ServerShutdownHandler.java:357)
> at
> org.apache.hadoop.hbase.master.handler.ServerShutdownHandler.process(ServerShutdownHandler.java:220)
> at
> org.apache.hadoop.hbase.executor.EventHandler.run(EventHandler.java:129)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.io.IOException: error or interrupted while splitting logs in
> [hdfs://hbase-bug58335-7.openstacklocal:8020/apps/hbase/data/WALs/hbase-bug58335-6.openstacklocal,16020,1470253655579-splitting]
> Task = installed = 1 done = 0 error = 1
> at
> org.apache.hadoop.hbase.master.SplitLogManager.splitLogDistributed(SplitLogManager.java:290)
> at
> org.apache.hadoop.hbase.master.MasterFileSystem.splitLog(MasterFileSystem.java:393)
> at
> org.apache.hadoop.hbase.master.MasterFileSystem.splitLog(MasterFileSystem.java:366)
> at
> org.apache.hadoop.hbase.master.MasterFileSystem.splitLog(MasterFileSystem.java:288)
> at
> org.apache.hadoop.hbase.master.handler.ServerShutdownHandler.process(ServerShutdownHandler.java:213)
> ... 4 more
> {code}
> If we fail to split the WAL, we normally retry, but it seems that it is doing
> this by throwing an exception:
> {code}
> private void resubmit(final ServerName serverName, IOException ex) throws
> IOException {
> // typecast to SSH so that we make sure that it is the SSH instance that
> // gets submitted as opposed to MSSH or some other derived instance of SSH
> this.services.getExecutorService().submit((ServerShutdownHandler) this);
> this.deadServers.add(serverName);
> throw new IOException("failed log splitting for " + serverName + ", will
> retry", ex);
> }
> {code}
> In erie, this patch: HBASE-14968 made the change that if the handler is
> throwing an uncaught exception, we abort the server:
> {code}
> protected void handleException(Throwable t) {
> String msg = "Caught throwable while processing event " + eventType;
> LOG.error(msg, t);
> if (server != null) {
> server.abort(msg, t);
> }
> }
> {code}
> It seems that SSH, and some other handlers are throwing exceptions in valid
> cases to retry the operations. We can undo the server.abort() call which was
> originally added in HBASE-14968 for cases where unchecked exceptions like
> ConcurrentModificationException, etc are not ignored.
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