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https://issues.apache.org/jira/browse/HBASE-3530?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=12994399#comment-12994399
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Jonathan Gray commented on HBASE-3530:
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In some of the HLog improvements that Dhruba and I have been working on, we've
become dependent on the LogSyncer thread. However, this is also still using an
HBase-side group commit. Just an FYI (alternative implementations of HLog
might be a neat idea, there are lots of different ways to optimize depending on
the use case)... don't let it hold you up.
Expect some patches this week around this stuff. Currently tracking down a
pesky race condition.
Do not start LogSyncer when not in deferred flush mode
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Key: HBASE-3530
URL: https://issues.apache.org/jira/browse/HBASE-3530
Project: HBase
Issue Type: Improvement
Components: regionserver
Affects Versions: 0.90.0
Reporter: Lars George
Priority: Minor
Fix For: 0.92.0
Currently we always start the LogSyncer thread, even when not necessary
because the deferred flush is set to false and the sync() is called on
every record. We could disable the thread and not have it flush every n secs
unnecessarily.
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