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HBASE-24603: Make Zookeeper sync() call synchronous #1945

Merged
merged 1 commit into from
Jun 25, 2020
Merged

HBASE-24603: Make Zookeeper sync() call synchronous #1945

merged 1 commit into from
Jun 25, 2020

Commits on Jun 25, 2020

  1. HBASE-24603: Make Zookeeper sync() call synchronous 

    Writing a test for this is tricky. There is enough coverage for
functional tests. Only concern is performance, but there is enough
logging for it to detect timed out/badly performing sync calls.

Additionally, this patch decouples the ZK event processing into it's
own thread rather than doing it in the EventThread's context. That
avoids deadlocks and stalls of the event thread.
    @bharathv
    bharathv committed Jun 25, 2020
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