[jira] [Created] (HBASE-11208) Remove the hbase.hstor.blockingStoreFiles setting

["Nicolas Liochon (JIRA)" <ji...@apache.org>]

Nicolas Liochon created HBASE-11208:
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             Summary: Remove the hbase.hstor.blockingStoreFiles setting
                 Key: HBASE-11208
                 URL: https://issues.apache.org/jira/browse/HBASE-11208
             Project: HBase
          Issue Type: Brainstorming
          Components: Compaction, regionserver
    Affects Versions: 0.99.0
            Reporter: Nicolas Liochon
            Assignee: Nicolas Liochon
             Fix For: 0.99.0


It's a little bit of a provocation, but the rational is:
 - there are some bugs around the delayed flush. For example, if the periodic scheduler has asked for a delayed flush, and that we need to flush, we will have to wait
 - if the number of WAL files increases, we won't flush immediately if the blockingFile number has been reached. This impacts the MTTR.
 - We don't write to limit the compaction impact, but they are many cases where we would want to flush anyway, as the writes cannot wait.
 - this obviously leads to huge write latency peaks.

So I'm questioning this setting, it leads to multiple intricate cases, unpredictable write latency, and looks like a workaround for compaction performances. With all the work done on compaction, I think we can get rid of it.  A solution in the middle would be to deprecate it and to set it to a large value...

Any opinion before I shoot :-) ? 






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