Nick Dimiduk created HBASE-10660:
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Summary: MR over snapshots can OOM when alternative blockcache is
enabled
Key: HBASE-10660
URL: https://issues.apache.org/jira/browse/HBASE-10660
Project: HBase
Issue Type: Bug
Components: mapreduce
Affects Versions: 0.98.0, 0.99.0
Reporter: Nick Dimiduk
Assignee: Nick Dimiduk
Running {{IntegrationTestTableSnapshotInputFormat}} with the {{BucketCache}}
enabled results in OOM. The map task is running a sequential scan over the
region region it opened, so probably it's not benefiting much from a
blockcache. Just disable blockcache entirely for these scans because it's
likely the cache config detected is designed for a RS running on a different
class of hardware than that running the map task.
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