[jira] [Updated] (HBASE-17211) Add more details in log when UnknownScannerException thrown in ScannerCallable

["Andrew Purtell (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-17211?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Purtell updated HBASE-17211:
-----------------------------------
    Fix Version/s: 0.98.24

> Add more details in log when UnknownScannerException thrown in ScannerCallable
> ------------------------------------------------------------------------------
>
>                 Key: HBASE-17211
>                 URL: https://issues.apache.org/jira/browse/HBASE-17211
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Yu Li
>            Assignee: Yu Li
>            Priority: Minor
>             Fix For: 2.0.0, 1.4.0, 0.98.24
>
>         Attachments: HBASE-17211.patch
>
>
> Currently if we try to close an already closed scanner, we may see below warning log which is useless for debugging:
> {noformat}
> 2016-06-23 01:21:21,101 WARN [main] org.apache.hadoop.hbase.client.ScannerCallable: Ignore, probably already closed
> org.apache.hadoop.hbase.UnknownScannerException: org.apache.hadoop.hbase.UnknownScannerException: Name: 18706910, already closed?
>     at org.apache.hadoop.hbase.regionserver.RSRpcServices.scan(RSRpcServices.java:2304)
>     at org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$2.callBlockingMethod(ClientProtos.java:32205)
>     at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:2188)
>     at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:102)
>     at org.apache.hadoop.hbase.ipc.RpcExecutor.consumerLoop(RpcExecutor.java:133)
>     at org.apache.hadoop.hbase.ipc.RpcExecutor$1.run(RpcExecutor.java:108)
> {noformat}
> and here we propose to add more details about the scan in log.



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