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https://issues.apache.org/jira/browse/HBASE-23669?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17031067#comment-17031067
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Michael Stack commented on HBASE-23669:
---------------------------------------
[~gk_coder] Master cannot carry tables. The feature was not finished. Do you
still need this patch if no regions on master?
> ZNodeClearer#clear() throws IllegalArgumentException
> -----------------------------------------------------
>
> Key: HBASE-23669
> URL: https://issues.apache.org/jira/browse/HBASE-23669
> Project: HBase
> Issue Type: Bug
> Affects Versions: 2.1.5
> Reporter: kangkang.guo
> Assignee: kangkang.guo
> Priority: Major
> Fix For: 2.1.5, 2.1.6, 2.1.8
>
> Attachments: HBASE-23669.branch-2.1.0001.patch,
> HBASE-23669.master.patch
>
>
> Precondition:
> hbase.balancer.tablesOnMaster = true
> hbase.balancer.tablesOnMaster.systemTablesOnly = true
> In case of master-rs collocation HBASE_ZNODE_FILE is overwritten by
> regionserver process in HRegionServer#handleReportForDutyResponse() here is
> how it looks on master server:
> [hadoop@master-node data]$ cat hbase-hadoop-master.znode
> /hbase/rs/master-node,16000,1578371505720
> When ZNodeClearer#clear(), the rsZNode is also splicing with the contents of
> the file, causing an exception：
> java.lang.IllegalArgumentException: Invalid path string
> "/hbase/rs//hbase/rs/master-node,16000,1578371503003" caused by empty node
> name specified @10
> at
> org.apache.zookeeper.common.PathUtils.validatePath(PathUtils.java:99)
> at org.apache.zookeeper.ZooKeeper.delete(ZooKeeper.java:851)
> at
> org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.delete(RecoverableZooKeeper.java:166)
> at
> org.apache.hadoop.hbase.zookeeper.ZKUtil.deleteNodeFailSilent(ZKUtil.java:1259)
> at
> org.apache.hadoop.hbase.zookeeper.ZKUtil.deleteNodeFailSilent(ZKUtil.java:1251)
> at org.apache.hadoop.hbase.ZNodeClearer.clear(ZNodeClearer.java:188)
> at
> org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:144)
> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
> at
> org.apache.hadoop.hbase.util.ServerCommandLine.doMain(ServerCommandLine.java:149)
> at org.apache.hadoop.hbase.master.HMaster.main(HMaster.java:3117)
>
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