stack created HBASE-19834:
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Summary: Signalling server-hosted-clients to abort retries
Key: HBASE-19834
URL: https://issues.apache.org/jira/browse/HBASE-19834
Project: HBase
Issue Type: Sub-task
Reporter: stack
Fix For: 2.0.0-beta-2
A few recent flakey tests have been variations on the server-hosted-client
retrying against a server or region that is never going to show up -- usually
because cluster is being shutdown. One example is client stuck, retrying to
update hbase:meta with change in region or table state but hbase:meta is down.
Another is HBASE-19794 where the test hangs because backup Master is trying to
become active and as part of the startup, it is trying to read table state from
hbase:meta but hbase:meta is not available; it has been put down as part of the
cluster shutdown.
One difficulty is that the master thread can get hung up by the client retries;
it is no longer available to receive shutdown or other event types (e.g. see
HBASE-19794). Some of our startup needs to be refactored moved into our run
method rather than done as some big single-threaded startup as happens now in
Master.
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