Lars Hofhansl created HBASE-13618:
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Summary: ReplicationSource is too eager to remove sinks
Key: HBASE-13618
URL: https://issues.apache.org/jira/browse/HBASE-13618
Project: HBase
Issue Type: Bug
Reporter: Lars Hofhansl
Priority: Minor
Looking at the replication for some other reason I noticed that the replication
source might be a bit too eager to remove sinks from the list of valid sinks.
The current logic allows a sink to fail N times (default 3) and then it will be
remove from the sinks. But note that this failure count is never reduced, so
given enough runtime and some network glitches _every_ sink will eventually be
removed. When all sink are removed the source pick new sinks and the counter is
set to 0 for all of them.
I think we should change to reset the counter each time we successfully
replicate something to the sink (which proves the sink isn't dead). Or we could
decrease the counter each time we successfully replication, that might be
better - if we consistently fail more attempts than we succeed the sink should
be removed.
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