ruanhui created HBASE-26716:
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Summary: NPE caused by converting uppercase hostname to lowercase
in RegionMover
Key: HBASE-26716
URL: https://issues.apache.org/jira/browse/HBASE-26716
Project: HBase
Issue Type: Improvement
Components: util
Affects Versions: 2.4.9
Reporter: ruanhui
In HBASE-19456, we introduced case-insensitivity feature in RegionMover and
converted uppercase hostnames to lowercase hostnames. But this maybe causes
that we can't get the rsgroup info of unloading server, because the addresses
in hbase case insensitive. This will make
org.apache.hadoop.hbase.util.TestRegionMoverWithRSGroupEnable fail.
2022-01-27T20:53:31,948 INFO [Time-limited test]
util.TestRegionMoverWithRSGroupEnable(127): Unloading {*}VM{*}-154-75-centos
2022-01-27T20:53:31,959 INFO
[RpcServer.default.FPBQ.Fifo.handler=2,queue=0,port=49232]
master.MasterRpcServices(3011): rsGroupInfo of {*}vm{*}-154-75-centos:39126 is
null
2022-01-27T20:53:31,961 INFO [pool-332-thread-1] util.RegionMover(419): rsgroup
of {*}vm{*}-154-75-centos:39126 is null
2022-01-27T20:53:31,961 ERROR [pool-332-thread-1] util.RegionMover(471): Error
while unloading regions
java.lang.NullPointerException: null
at
org.apache.hadoop.hbase.util.RegionMover.lambda$unloadRegions$3(RegionMover.java:421)
~[classes/:?]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_292]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
[?:1.8.0_292]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
[?:1.8.0_292]
at java.lang.Thread.run(Thread.java:748) [?:1.8.0_292]
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