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HBASE-24603: Make Zookeeper sync() call synchronous (#1945) #1976

Merged
merged 1 commit into from
Jun 26, 2020
Merged

HBASE-24603: Make Zookeeper sync() call synchronous (#1945) #1976

merged 1 commit into from
Jun 26, 2020

Commits on Jun 25, 2020

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

    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.

Signed-off-by: Andrew Purtell <apurtell@apache.org>
Signed-off-by: Viraj Jasani <vjasani@apache.org>
(cherry picked from commit 84e246f)
(cherry picked from commit 2379a25)
    @bharathv
    bharathv committed Jun 25, 2020
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