Keith Turner created ACCUMULO-2003:
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Summary: Garbage collector fails to compact metadata table
Key: ACCUMULO-2003
URL: https://issues.apache.org/jira/browse/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.
{noformat}
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(TableOperationsImpl.java:330)
at
org.apache.accumulo.core.client.admin.TableOperationsImpl.compact(TableOperationsImpl.java:826)
at
org.apache.accumulo.core.client.admin.TableOperationsImpl.compact(TableOperationsImpl.java:807)
at
org.apache.accumulo.gc.SimpleGarbageCollector.run(SimpleGarbageCollector.java:474)
at
org.apache.accumulo.gc.SimpleGarbageCollector.main(SimpleGarbageCollector.java:144)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.accumulo.start.Main$1.run(Main.java:137)
at java.lang.Thread.run(Thread.java:662)
Caused by: org.apache.thrift.TApplicationException: Internal error processing
waitForTableOperation
at
org.apache.thrift.TApplicationException.read(TApplicationException.java:108)
at org.apache.thrift.TServiceClient.receiveBase(TServiceClient.java:71)
at
org.apache.accumulo.core.master.thrift.MasterClientService$Client.recv_waitForTableOperation(MasterClientService.java:610)
at
org.apache.accumulo.core.master.thrift.MasterClientService$Client.waitForTableOperation(MasterClientService.java:595)
at
org.apache.accumulo.core.client.admin.TableOperationsImpl.waitForTableOperation(TableOperationsImpl.java:268)
at
org.apache.accumulo.core.client.admin.TableOperationsImpl.doTableOperation(TableOperationsImpl.java:310)
... 10 more
{noformat}
I think the following is the cause of the problem from the master logs.
Looking at the code I suspect this is related to the creation of the root table
and that an unnecessary range operation is being done.
{noformat}
Failed to execute Repo, tid=0f298c492c30ee6c
java.lang.IllegalArgumentException: Range [+r<%00; : []
9223372036854775807 false,+inf) does not overlap [!0; : [] 9223372036854775807
false,!0<%00; : [] 9223372036854775807 false)
at org.apache.accumulo.core.data.Range.clip(Range.java:439)
at org.apache.accumulo.core.data.Range.clip(Range.java:409)
at
org.apache.accumulo.master.tableOps.CompactionDriver.isReady(CompactRange.java:105)
at
org.apache.accumulo.master.tableOps.CompactionDriver.isReady(CompactRange.java:65)
at
org.apache.accumulo.master.tableOps.TraceRepo.isReady(TraceRepo.java:44)
at
org.apache.accumulo.fate.Fate$TransactionRunner.run(Fate.java:64)
at
org.apache.accumulo.fate.util.LoggingRunnable.run(LoggingRunnable.java:34)
at java.lang.Thread.run(Thread.java:662)
{noformat}
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