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From "Sean Busbey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15219) Canary tool does not return non-zero exit code when one of regions is in stuck state
Date Sat, 13 Feb 2016 16:52:18 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15219?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15146054#comment-15146054
] 

Sean Busbey commented on HBASE-15219:
-------------------------------------

my concern is that it's difficult to tell what's bad due to preexisting and what's bad from
the patch. flakey tests on trunk are unlikely to cause findbugs issues or hadoop version incompatibilities.

Right now 1.2 is blue and I wouldn't want to jeopardize that as we move into a release vote
with a short window.

https://builds.apache.org/view/H-L/view/HBase/job/HBase-1.2/lastCompletedBuild/testReport/

Do we have one or more tickets tracking the failures in trunk that you think are causing unrelated
errors?

> Canary tool does not return non-zero exit code when one of regions is in stuck state

> -------------------------------------------------------------------------------------
>
>                 Key: HBASE-15219
>                 URL: https://issues.apache.org/jira/browse/HBASE-15219
>             Project: HBase
>          Issue Type: Improvement
>          Components: canary
>    Affects Versions: 0.98.16
>            Reporter: Vishal Khandelwal
>            Assignee: Ted Yu
>            Priority: Critical
>             Fix For: 2.0.0, 1.3.0, 1.2.1, 0.98.18
>
>         Attachments: HBASE-15219.v1.patch, HBASE-15219.v3.patch, HBASE-15219.v4.patch,
HBASE-15219.v5.patch, HBASE-15219.v7.patch, HBASE-15219.v8.patch
>
>
> {code}
> 2016-02-05 12:24:18,571 ERROR [pool-2-thread-7] tool.Canary - read from region CAN_1,\x08\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00,1454667477865.00e77d07b8defe10704417fb99aa0418.
column family 0 failed
> org.apache.hadoop.hbase.client.RetriesExhaustedException: Failed after attempts=2, exceptions:
> Fri Feb 05 12:24:15 GMT 2016, org.apache.hadoop.hbase.client.RpcRetryingCaller@54c9fea0,
org.apache.hadoop.hbase.NotServingRegionException: org.apache.hadoop.hbase.NotServingRegionException:
Region CAN_1,\x08\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00,1454667477865.00e77d07b8defe10704417fb99aa0418.
is not online on isthbase02-dnds1-3-crd.eng.sfdc.net,60020,1454669984738
> 	at org.apache.hadoop.hbase.regionserver.HRegionServer.getRegionByEncodedName(HRegionServer.java:2852)
> 	at org.apache.hadoop.hbase.regionserver.HRegionServer.getRegion(HRegionServer.java:4468)
> 	at org.apache.hadoop.hbase.regionserver.HRegionServer.get(HRegionServer.java:2984)
> 	at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:31186)
> 	at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2149)
> 	at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:104)
> 	at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:133)
> 	at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:108)
> 	at java.lang.Thread.run(Thread.java:745)
> --------
> -bash-4.1$ echo $?
> 0
> {code}
> Below code prints the error but it does sets/returns the exit code. Due to this tool
can't be integrated with nagios or other alerting. 
> Ideally it should return error for failures. as pre the documentation:
> <snip>
> This tool will return non zero error codes to user for collaborating with other monitoring
tools, such as Nagios. The error code definitions are:
> private static final int USAGE_EXIT_CODE = 1;
> private static final int INIT_ERROR_EXIT_CODE = 2;
> private static final int TIMEOUT_ERROR_EXIT_CODE = 3;
> private static final int ERROR_EXIT_CODE = 4;
> </snip>
> {code}
> org.apache.hadoop.hbase.tool.Canary.RegionTask 
> public Void read() {
>       ....
>       try {
>         table = connection.getTable(region.getTable());
>         tableDesc = table.getTableDescriptor();
>       } catch (IOException e) {
>         LOG.debug("sniffRegion failed", e);
>         sink.publishReadFailure(region, e);
>        ...
>         return null;
>       }
> {code}



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