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https://issues.apache.org/jira/browse/HBASE-9026?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13716313#comment-13716313
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Y. SREENIVASULU REDDY commented on HBASE-9026:
----------------------------------------------
thanks for review, rajesh.
> RestartRsHoldingRoot action in org.apache.hadoop.hbase.util.ChaosMonkey
> restarting the server holding .META. instead of -ROOT-
> ------------------------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-9026
> URL: https://issues.apache.org/jira/browse/HBASE-9026
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.94.8
> Reporter: Y. SREENIVASULU REDDY
> Priority: Minor
> Fix For: 0.94.11
>
> Attachments: ChaosMonkey.java.patch
>
>
> In ChaosMonkey instead of restarting Root holded regionServer it is
> restarting META holded regionServer.
> {code}
> public static class RestartRsHoldingRoot extends RestartRandomRs {
> public RestartRsHoldingRoot(long sleepTime) {
> super(sleepTime);
> }
> @Override
> void perform() throws Exception {
> LOG.info("Performing action: Restart region server holding ROOT");
> ServerName server = cluster.getServerHoldingMeta();
> if (server == null) {
> LOG.warn("No server is holding -ROOT- right now.");
> return;
> }
> restartRs(server, sleepTime);
> }
> }
> {code}
> {noformat}
> 13/07/23 17:03:54 INFO util.ChaosMonkey: Performing action: Restart region
> server holding ROOT
> 13/07/23 17:03:54 DEBUG client.HConnectionManager$HConnectionImplementation:
> Looked up root region location,
> connection=org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@52b57e9a;
> serverName=ocean06,60020,1374569995361
> 13/07/23 17:03:54 DEBUG client.HConnectionManager$HConnectionImplementation:
> Removed .META.,,1.1028785192 for tableName=.META. from cache because of
> 13/07/23 17:03:54 DEBUG client.HConnectionManager$HConnectionImplementation:
> Cached location for .META.,,1.1028785192 is ocean06:60020
> 13/07/23 17:03:54 INFO util.ChaosMonkey: Killing region
> server:ocean06,60020,1374569995361
> 13/07/23 17:03:54 INFO hbase.HBaseCluster: Aborting RS:
> ocean06,60020,1374569995361
> 13/07/23 17:03:54 INFO hbase.ClusterManager: Executing remote command: ps ux
> | grep regionserver | grep hbase | grep -v grep | tr -s ' ' | cut -d ' ' -f2
> | xargs kill -s SIGKILL , hostname:ocean06
> 13/07/23 17:03:54 INFO util.Shell: Executing full command [/usr/bin/ssh
> ocean06 "ps ux | grep regionserver | grep hbase | grep -v grep | tr -s ' ' |
> cut -d ' ' -f2 | xargs kill -s SIGKILL"]
> 13/07/23 17:03:54 INFO hbase.ClusterManager: Executed remote command, exit
> code:0 , output:
> 13/07/23 17:03:54 INFO hbase.HBaseCluster: Waiting service:regionserver to
> stop: ocean06,60020,1374569995361
> 13/07/23 17:03:54 INFO hbase.ClusterManager: Executing remote command: ps ux
> | grep regionserver | grep hbase | grep -v grep | tr -s ' ' | cut -d ' ' -f2
> , hostname:ocean06
> 13/07/23 17:03:54 INFO util.Shell: Executing full command [/usr/bin/ssh
> ocean06 "ps ux | grep regionserver | grep hbase | grep -v grep | tr -s ' ' |
> cut -d ' ' -f2"]
> 13/07/23 17:03:55 INFO hbase.ClusterManager: Executed remote command, exit
> code:0 , output:
> 13/07/23 17:03:55 INFO util.ChaosMonkey: Killed region
> server:ocean06,60020,1374569995361. Reported num of rs:2
> {noformat}
> This is only in 0.94.X
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