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https://issues.apache.org/jira/browse/HBASE-23040?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16932730#comment-16932730
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Hudson commented on HBASE-23040:
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Results for branch branch-2
[build #2272 on
builds.a.o|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/2272/]:
(x) *{color:red}-1 overall{color}*
----
details (if available):
(/) {color:green}+1 general checks{color}
-- For more information [see general
report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/2272//General_Nightly_Build_Report/]
(x) {color:red}-1 jdk8 hadoop2 checks{color}
-- For more information [see jdk8 (hadoop2)
report|https://builds.apache.org/job/HBase%20Nightly/job/branch-2/2272//JDK8_Nightly_Build_Report_(Hadoop2)/]
(/) {color:green}+1 jdk8 hadoop3 checks{color}
-- For more information [see jdk8 (hadoop3)
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(/) {color:green}+1 source release artifact{color}
-- See build output for details.
(/) {color:green}+1 client integration test{color}
> region mover gives NullPointerException instead of saying a host isn't in the
> cluster
> -------------------------------------------------------------------------------------
>
> Key: HBASE-23040
> URL: https://issues.apache.org/jira/browse/HBASE-23040
> Project: HBase
> Issue Type: Bug
> Affects Versions: 3.0.0, 2.1.0, 2.2.0, 2.3.0
> Reporter: Sean Busbey
> Assignee: Sean Busbey
> Priority: Minor
> Fix For: 3.0.0, 2.3.0, 2.1.7, 2.2.2
>
>
> if passed a host that isn't in the cluster we get a NPE
> {code}
> 2019-09-17 21:50:45,595 ERROR [pool-2-thread-1] util.RegionMover: Error while
> unloading regions
> java.lang.NullPointerException: serverName is null
> at
> org.apache.hbase.thirdparty.com.google.common.base.Preconditions.checkNotNull(Preconditions.java:897)
> at
> org.apache.hadoop.hbase.client.AsyncRpcRetryingCallerFactory$AdminRequestCallerBuilder.build(AsyncRpcRetryingCallerFactory.java:518)
> at
> org.apache.hadoop.hbase.client.AsyncRpcRetryingCallerFactory$AdminRequestCallerBuilder.call(AsyncRpcRetryingCallerFactory.java:522)
> at
> org.apache.hadoop.hbase.client.RawAsyncHBaseAdmin.getRegions(RawAsyncHBaseAdmin.java:842)
> at
> org.apache.hadoop.hbase.client.AdminOverAsyncAdmin.getRegions(AdminOverAsyncAdmin.java:229)
> at
> org.apache.hadoop.hbase.util.RegionMover.unloadRegions(RegionMover.java:448)
> at
> org.apache.hadoop.hbase.util.RegionMover.lambda$unload$1(RegionMover.java:431)
> at java.util.concurrent.FutureTask.run(FutureTask.java:266)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
> {code}
> Should instead give some kind of "I don't know what this host is
> 'foobar.example.com'" and maybe a debug message with what hosts were in the
> cluster.
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