Separate compression setting for flush files
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Key: HBASE-3649
URL: https://issues.apache.org/jira/browse/HBASE-3649
Project: HBase
Issue Type: Improvement
Reporter: Andrew Purtell
Assignee: Andrew Purtell
Fix For: 0.90.2, 0.92.0
In this thread on user@hbase: http://search-hadoop.com/m/WUnLM6ojHm1 J-D
conjectures that compressing flush files leads to a suboptimal situation where
"the puts are sometimes blocked on the memstores which are blocked by the
flusher thread which is blocked because there's too many files to compact
because the compactor is given too many small files to compact and has to
compact the same data a bunch of times."
We have a separate compression setting already for major compaction vs store
files written during minor compaction, for background/archival apps. Add a
separate compression setting for flush files, default to none, to avoid the
above condition.
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