Client with cached region location pointing at dead server does not recover
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Key: HBASE-1920
URL: https://issues.apache.org/jira/browse/HBASE-1920
Project: Hadoop HBase
Issue Type: Bug
Affects Versions: 0.20.1
Reporter: Jonathan Gray
Priority: Critical
Fix For: 0.20.2, 0.21.0
Testing in HBASE-1908 uncovered an issue where I had a client that had cached a
region location. I killed that regionserver, waited for recovery/reassignment,
and then tried to scan the table again from the same client w/o restarting it.
A client normally gets a NotServingRegionException when a region is reassigned,
but since this server is dead the client just got Connection Refused type
exceptions. These didn't seem to trigger the client to ask META for a new
region location.
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