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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-15219) Canary tool does not return non-zero exit code when one of regions is in stuck state
Date Wed, 10 Feb 2016 21:25:18 GMT

     [ https://issues.apache.org/jira/browse/HBASE-15219?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ted Yu updated HBASE-15219:
---------------------------
    Resolution: Fixed
        Status: Resolved  (was: Patch Available)

> 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: Bug
>          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
>
>
> {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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