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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-10312) Flooding the cluster with administrative actions leads to collapse
Date Fri, 10 Jan 2014 19:41:50 GMT

    [ https://issues.apache.org/jira/browse/HBASE-10312?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13868196#comment-13868196
] 

Andrew Purtell commented on HBASE-10312:
----------------------------------------

With the AccessController active only users granted ADMIN privilege can do this, so it's not
a critical issue unless enabling security is not an option for the deployment.

> Flooding the cluster with administrative actions leads to collapse
> ------------------------------------------------------------------
>
>                 Key: HBASE-10312
>                 URL: https://issues.apache.org/jira/browse/HBASE-10312
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Andrew Purtell
>
> Steps to reproduce:
> 1. Start a cluster.
> 2. Start an ingest process.
> 3. In the HBase shell, do this:
> {noformat}
> while true ; do
>    flush 'table'
> end
> {noformat}
> We should reject abuse via administrative requests like this.
> What happens on the cluster is the requests back up, leading to lots of these:
> {noformat}
> 2014-01-10 18:55:55,293 WARN  [Priority.RpcServer.handler=2,port=8120] monitoring.TaskMonitor:
Too many actions in action monitor! Purging some.
> {noformat}
> At this point we could lower a gate on further requests for actions until the backlog
clears.
> Continuing, all of the regionservers will eventually die with a StackOverflowError of
unknown origin because, stack overflow:
> {noformat}
> 2014-01-10 19:02:02,783 ERROR [Priority.RpcServer.handler=3,port=8120] ipc.RpcServer:
Unexpected throwable object java.lang.StackOverflowError
>         at java.util.ArrayList$SubList.add(ArrayList.java:965)
> [...]
> {noformat}



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