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From "Keith Turner (JIRA)" <>
Subject [jira] [Created] (ACCUMULO-2003) Garbage collector fails to compact metadata table
Date Wed, 11 Dec 2013 16:39:08 GMT
Keith Turner created ACCUMULO-2003:

             Summary: Garbage collector fails to compact metadata table
                 Key: ACCUMULO-2003
             Project: Accumulo
          Issue Type: Bug
            Reporter: Keith Turner
             Fix For: 1.6.0

While running randomwalk test on 1.6.0-SNAPSHOT I noticed some errors on the monitor page
indicating the Accumulo garbage collector could not compact the metadata table.

The following exception is in the GC log.

2013-12-11 10:49:57,447 [gc.SimpleGarbageCollector] WARN : org.apache.accumulo.core.client.AccumuloException:
Internal error processing waitForTableOperation
org.apache.accumulo.core.client.AccumuloException: Internal error processing waitForTableOperation
        at org.apache.accumulo.core.client.admin.TableOperationsImpl.doTableOperation(
        at org.apache.accumulo.core.client.admin.TableOperationsImpl.compact(
        at org.apache.accumulo.core.client.admin.TableOperationsImpl.compact(
        at org.apache.accumulo.gc.SimpleGarbageCollector.main(
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(
        at java.lang.reflect.Method.invoke(
        at org.apache.accumulo.start.Main$
Caused by: org.apache.thrift.TApplicationException: Internal error processing waitForTableOperation
        at org.apache.thrift.TServiceClient.receiveBase(
        at org.apache.accumulo.core.master.thrift.MasterClientService$Client.recv_waitForTableOperation(
        at org.apache.accumulo.core.master.thrift.MasterClientService$Client.waitForTableOperation(
        at org.apache.accumulo.core.client.admin.TableOperationsImpl.waitForTableOperation(
        at org.apache.accumulo.core.client.admin.TableOperationsImpl.doTableOperation(
        ... 10 more


I think the following is the cause of the problem from the master logs.  Looking at the code
I suspect this is related to the creation of the root table and that an unnecessary range
operation is being done. 

Failed to execute Repo, tid=0f298c492c30ee6c
	java.lang.IllegalArgumentException: Range [+r<%00; : [] 9223372036854775807 false,+inf)
does not overlap [!0; : [] 9223372036854775807 false,!0<%00; : [] 9223372036854775807 false)
		at org.apache.accumulo.master.tableOps.CompactionDriver.isReady(
		at org.apache.accumulo.master.tableOps.CompactionDriver.isReady(
		at org.apache.accumulo.master.tableOps.TraceRepo.isReady(
		at org.apache.accumulo.fate.Fate$

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