[jira] [Created] (HBASE-14457) Umbrella: Improve Multiple WAL for production usage

["Yu Li (JIRA)" <ji...@apache.org>]

Yu Li created HBASE-14457:
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             Summary: Umbrella: Improve Multiple WAL for production usage
                 Key: HBASE-14457
                 URL: https://issues.apache.org/jira/browse/HBASE-14457
             Project: HBase
          Issue Type: Umbrella
    Affects Versions: 2.0.0, 3.0.0
            Reporter: Yu Li
            Assignee: Yu Li


HBASE-5699 proposed the idea to run with multiple WAL in regionserver and did a great initial work there, but when trying to use it in our production cluster, we still found several issues to resolve, like tracking multiple WAL paths in replication (HBASE-6617), fixing UT with multiwal provider (HBASE-14411), introducing a namespace-based strategy for RegionGroupingProvider (HBASE-14456), etc. This is an umbrella including(but not limited of) all these works and efforts to make multiple wal ready for production usage and give user a clear picture about it.

Besides the developing works done, I'd also like to share some scenarios and testing/online data in this JIRA about our usage/performance of multiple wal, to(hopefully) help people better judge whether to enable multiple wal or not in their own cluster and what they might gain.



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