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From "Sean Hickey (JIRA)" <>
Subject [jira] [Created] (ACCUMULO-1653) Unable to merge during RandomWalk
Date Wed, 14 Aug 2013 16:11:52 GMT
Sean Hickey created ACCUMULO-1653:

             Summary: Unable to merge during RandomWalk
                 Key: ACCUMULO-1653
             Project: Accumulo
          Issue Type: Bug
            Reporter: Sean Hickey

I was running RandomWalk and ran into an issue where one of my walkers got stuck doing a merge
(on table id=20). The only related error that showed up was that a file in HDFS couldn't be
found (and continues to not be found, it keeps checking regularly) while trying to merge the
metadata records. Here's the error:
2013-08-14 11:54:27,246 [master.Master] ERROR: Unable merge metadata table records
org.apache.accumulo.core.client.AccumuloException: Could not find file
/20//c-00000000 in [hdfs://localhost:9000/accumulo/tables]
        at org.apache.accumulo.server.master.TabletGroupWatcher.mergeMetadataRecords(
        at org.apache.accumulo.server.master.TabletGroupWatcher.updateMergeState(
Caused by: Could not find file /20//c-00000000 in [hdfs://localhost:9000/accumulo/tables]
        at org.apache.accumulo.server.fs.VolumeManagerImpl.getFullPath(
        at org.apache.accumulo.server.util.MetadataTableUtil.createDeleteMutation(
        at org.apache.accumulo.server.master.TabletGroupWatcher.mergeMetadataRecords(
        ... 2 more

And the metadata table had c-00000000 listed here:
root@802 !METADATA> grep c-00000
20;00b581d7479230dd srv:dir []    /c-00000000
20< srv:dir []    /c-00000001

I was testing my table namespaces code but this seemed like an unrelated issue.

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