Matteo Bertozzi created HBASE-7253:
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Summary: Compaction Tool
Key: HBASE-7253
URL: https://issues.apache.org/jira/browse/HBASE-7253
Project: HBase
Issue Type: New Feature
Components: Compaction
Affects Versions: 0.96.0
Reporter: Matteo Bertozzi
Assignee: Matteo Bertozzi
Priority: Minor
Fix For: 0.96.0
Attachments: HBASE-7253-v0.patch
In HBASE-5616, as part of the compaction code refactor, a CompactionTool was
added.
but there are some issues:
* The tool is under test/
* mockito is required, so the "test" scope should be removed from the pom.xml,
otherwise the tool doesn't start
* The mock, used by the tool, is mocking HRegion.getRegionInfo() but some code
(Store) uses HRegion.regionInfo directly HStore.java#L2021, HStore.java#L1389,
HStore.java#L1402 and you end up with a NPE in the tool.
* The Mocked Store uses a dummy family and the compacted files doesn't get the
same family properties specified (compression, encoding, ...)
* at the end of compaction CompactionTool.java#L155, on by default, the
compaction file is removed (note that the compacted one are already removed
inside the store.compact()... and you end up with an empty dir, if you compact
everything.
I've fixed some stuff and added support to:
* Run the compaction as a MR Job
* Specify a Table (compact each region/family)
* Specify a Region (compact each family)
* Specify a Family (as before)
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