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Posted to dev@hbase.apache.org by "Nick Dimiduk (JIRA)" <ji...@apache.org> on 2014/02/11 19:06:26 UTC
[jira] [Created] (HBASE-10500) hbck and OOM when BucketCache is
enabled
Nick Dimiduk created HBASE-10500:
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Summary: hbck and OOM when BucketCache is enabled
Key: HBASE-10500
URL: https://issues.apache.org/jira/browse/HBASE-10500
Project: HBase
Issue Type: Bug
Components: hbck
Affects Versions: 0.98.0
Reporter: Nick Dimiduk
Assignee: Nick Dimiduk
Running {{hbck --repair}} when BucketCache is enabled in offheap mode can cause OOM. This is apparently because {{bin/hbase}} does not include $HBASE_REGIONSERVER_OPTS for hbck. It instantiates an HRegion instance as part of HDFSIntegrityFixer.handleHoleInRegionChain. That HRegion initializes its CacheConfig, which doesn't have the necessary Direct Memory.
Possible solutions include:
- disable blockcache in the config used by hbck when running its repairs
- include HBASE_REGIONSERVER_OPTS in the HBaseFSCK startup arguments
I'm leaning toward the former because it's possible that hbck is run on a host with the same hardware profile as the RS.
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