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Posted to dev@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2013/10/09 21:58:42 UTC
[jira] [Created] (HBASE-9736) Alow more than one log splitter per
RS
stack created HBASE-9736:
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Summary: Alow more than one log splitter per RS
Key: HBASE-9736
URL: https://issues.apache.org/jira/browse/HBASE-9736
Project: HBase
Issue Type: Improvement
Components: MTTR
Reporter: stack
Priority: Critical
IIRC, this is an idea that came from the lads at Xiaomi.
I have a small cluster of 6 RSs and one went down. It had a few WALs. I see this in logs:
2013-10-09 05:47:27,890 DEBUG org.apache.hadoop.hbase.master.SplitLogManager: total tasks = 25 unassigned = 21
WAL splitting is held up for want of slots out on the cluster to split WALs.
We need to be careful we don't overwhelm the foreground regionservers but more splitters should help get all back online faster.
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