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Posted to issues@hbase.apache.org by "Jean-Daniel Cryans (Commented) (JIRA)" <ji...@apache.org> on 2012/04/03 01:03:23 UTC
[jira] [Commented] (HBASE-5702)
MasterSchemaChangeTracker.excludeRegionServerForSchemaChanges leaks a
MonitoredTask per call
[ https://issues.apache.org/jira/browse/HBASE-5702?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13244801#comment-13244801 ]
Jean-Daniel Cryans commented on HBASE-5702:
-------------------------------------------
Looking at the code it seems it's leaking in other places... and that message shouldn't even be there in the first place because hbase.instant.schema.alter.enabled isn't enabled on this cluster.
> MasterSchemaChangeTracker.excludeRegionServerForSchemaChanges leaks a MonitoredTask per call
> --------------------------------------------------------------------------------------------
>
> Key: HBASE-5702
> URL: https://issues.apache.org/jira/browse/HBASE-5702
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.94.0
> Reporter: Jean-Daniel Cryans
> Fix For: 0.94.0, 0.96.0
>
>
> This bug is so easy to reproduce I'm wondering why it hasn't been reported yet. Stop any number of region servers on a 0.94/6 cluster and you'll see in the master interface one task per stopped region server saying the following:
> |Processing schema change exclusion for region server = sv4r27s44,62023,1333402175340|RUNNING (since 5sec ago)|No schema change in progress. Skipping exclusion for server = sv4r27s44,62023,1333402175340 (since 5sec ago)|
> It's gonna stay there until the master cleans it:
> bq. WARN org.apache.hadoop.hbase.monitoring.TaskMonitor: Status Processing schema change exclusion for region server = sv4r27s44,62023,1333402175340: status=No schema change in progress. Skipping exclusion for server = sv4r27s44,62023,1333402175340, state=RUNNING, startTime=1333404636419, completionTime=-1 appears to have been leaked
> It's not clear to me why it's using a MonitoredTask in the first place.
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