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Hudson commented on HBASE-25237: -------------------------------- Results for branch branch-2.3 [build #113 on builds.a.o|https://ci-hadoop.apache.org/job/HBase/job/HBase%20Nightly/job/branch-2.3/113/]: (/) *{color:green}+1 overall{color}* ---- details (if available): (/) {color:green}+1 general checks{color} -- For more information [see general report|https://ci-hadoop.apache.org/job/HBase/job/HBase%20Nightly/job/branch-2.3/113/General_20Nightly_20Build_20Report/] (/) {color:green}+1 jdk8 hadoop2 checks{color} -- For more information [see jdk8 (hadoop2) report|https://ci-hadoop.apache.org/job/HBase/job/HBase%20Nightly/job/branch-2.3/113/JDK8_20Nightly_20Build_20Report_20_28Hadoop2_29/] (/) {color:green}+1 jdk8 hadoop3 checks{color} -- For more information [see jdk8 (hadoop3) report|https://ci-hadoop.apache.org/job/HBase/job/HBase%20Nightly/job/branch-2.3/113/JDK8_20Nightly_20Build_20Report_20_28Hadoop3_29/] (/) {color:green}+1 jdk11 hadoop3 checks{color} -- For more information [see jdk11 report|https://ci-hadoop.apache.org/job/HBase/job/HBase%20Nightly/job/branch-2.3/113/JDK11_20Nightly_20Build_20Report_20_28Hadoop3_29/] (/) {color:green}+1 source release artifact{color} -- See build output for details. (/) {color:green}+1 client integration test{color} > 'hbase master stop' shuts down the cluster, not the master only > --------------------------------------------------------------- > > Key: HBASE-25237 > URL: https://issues.apache.org/jira/browse/HBASE-25237 > Project: HBase > Issue Type: Improvement > Reporter: Michael Stack > Assignee: Lokesh Khurana > Priority: Major > Fix For: 3.0.0-alpha-1, 1.7.0, 2.4.0, 2.2.7, 2.3.4 > > Attachments: HBASE-25237.patch > > > This is confusing (an operator at place-of-employment shut down a massive > cluster mistakenly thinking he was shutting down the master only). > If I run 'hbase master --help', it says unsupported and then dumps out: > {code:java} > org.apache.hbase.thirdparty.org.apache.commons.cli.UnrecognizedOptionException: > Unrecognized option: --help > at > org.apache.hbase.thirdparty.org.apache.commons.cli.Parser.processOption(Parser.java:383) > at > org.apache.hbase.thirdparty.org.apache.commons.cli.Parser.parse(Parser.java:210) > at > org.apache.hbase.thirdparty.org.apache.commons.cli.Parser.parse(Parser.java:88) > at > org.apache.hadoop.hbase.master.HMasterCommandLine.run(HMasterCommandLine.java:89) > 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:2945) > Usage: Master [opts] start|stop|clear > start Start Master. If local mode, start Master and RegionServer in same JVM > stop Start cluster shutdown; Master signals RegionServer shutdown > clear Delete the master znode in ZooKeeper after a master crashes > where [opts] are: > --minRegionServers=<servers> Minimum RegionServers needed to host user > tables. > --localRegionServers=<servers> RegionServers to start in master process when > in standalone mode. > --masters=<servers> Masters to start in this process. > --backup Master should start in backup mode{code} > > ... so the 'help' is clear that its the cluster that goes down, not just the > master – but that is hardly compensates for the unexpected behavior. > > 'hbase master stop' is actually what is used internally you run stop-hbase.sh. > > Stopping the cluster when your run 'hbase master stop' is actually very old > behavior. Its still confusing though. We could change this. > If I run 'hbase regionserver stop', it does this: > {code:java} > System.err.println( > "To shutdown the regionserver run " + > "hbase-daemon.sh stop regionserver or send a kill signal to " + > "the regionserver pid");{code} > I'd think we could make improvement here. We could do something like the RS > output if user types 'hbase master stop' at a minimum requiring operator add > a '–force' flag if they want the cluster to go down or point them to a new > hbase cluster stop/hbase cluster start or point them at stop-hbase.sh. > Should also change mode so 'hbase master stop' stops the master and not the > cluster (there was no stopMaster when the 'hbase master stop' was added > originally – but there is one now). > -- This message was sent by Atlassian Jira (v8.3.4#803005)