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https://issues.apache.org/jira/browse/FLUME-1906?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13574154#comment-13574154
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Mubarak Seyed commented on FLUME-1906:
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bq. I am just a bit concerned about completing the transaction on the sink side
without the data being persisted. This could potentially cause debugging issues.
I think it is a trade-off by giving up durability (for yet-to-flush in-memory
data) to save disk space in HDFS. There are some instances where ops runs hbase
clusters with WAL turned off to save 3 copies of WAL data in HDFS. if config
changes for WAL then we can add a INFO in log for easy debugging.
> Ability to disable WAL for put operation in HBaseSink
> -----------------------------------------------------
>
> Key: FLUME-1906
> URL: https://issues.apache.org/jira/browse/FLUME-1906
> Project: Flume
> Issue Type: Improvement
> Components: Sinks+Sources
> Affects Versions: v1.3.1
> Reporter: Mubarak Seyed
>
> HBase supports setWriteToWAL(boolean) in Put to write edits to WAL or not.
> User can specify the disable option in HBase sink configurations.
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