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  1. HBase
  2. HBASE-17211

Add more details in log when UnknownScannerException thrown in ScannerCallable

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Details

    • Improvement
    • Status: Resolved
    • Minor
    • Resolution: Fixed
    • None
    • 1.4.0, 0.98.24, 2.0.0
    • Operability
    • None
    • Reviewed

    Description

      Currently if we try to close an already closed scanner, we may see below warning log which is useless for debugging:

      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)

      and here we propose to add more details about the scan in log.

      Attachments

        1. HBASE-17211.patch
          0.8 kB
          Yu Li

        Issue Links

          relates to

          Improvement - An improvement or enhancement to an existing feature or task. HBASE-17212 Should add null checker on table name in HTable constructor and RegionServerCallable

          • Major - Major loss of function.
          • Resolved

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            People

              liyu Yu Li
              liyu Yu Li
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              Dates

                Created:
                Updated:
                Resolved: