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https://issues.apache.org/jira/browse/HBASE-20856?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16543472#comment-16543472
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Tak Lon (Stephen) Wu commented on HBASE-20856:
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I was trying to work on this issue and related code in
[WALFactory|https://github.com/apache/hbase/blob/master/hbase-server/src/main/java/org/apache/hadoop/hbase/wal/WALFactory.java#L253]
(master branch and branch-2) and found that the default is AsyncFSWALProvider
if {{hbase.wal.meta_provider}} is not set.
so, may I ask what is the `Operator` means here?
> PITA having to set WAL provider in two places
> ---------------------------------------------
>
> Key: HBASE-20856
> URL: https://issues.apache.org/jira/browse/HBASE-20856
> Project: HBase
> Issue Type: Improvement
> Components: Operability, wal
> Reporter: stack
> Priority: Minor
> Fix For: 2.0.2, 2.2.0, 2.1.1
>
>
> Courtesy of [~elserj], I learn that changing WAL we need to set two places...
> both hbase.wal.meta_provider and hbase.wal.provider. Operator should only
> have to set it in one place; hbase.wal.meta_provider should pick up general
> setting unless hbase.wal.meta_provider is explicitly set.
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