[jira] Resolved: (CASSANDRA-715) HHOM goes into infinite loop, wasting cpu

["Jonathan Ellis (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-715?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Ellis resolved CASSANDRA-715.
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    Resolution: Fixed

committed

> HHOM goes into infinite loop, wasting cpu
> -----------------------------------------
>
>                 Key: CASSANDRA-715
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-715
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 0.6
>         Environment: debian lenny amd64 OpenJDK 64-Bit Server VM (build 1.6.0_0-b11, mixed mode)
>            Reporter: Brandon Williams
>            Assignee: Jonathan Ellis
>             Fix For: 0.6
>
>         Attachments: 715.txt
>
>
> To replicate: take a host down, cause hints to it, wait for HHOM to kick in
> The issue is line 201 of HHOM:
> startColumn = keyColumn.name(); // repeating the last as the first is fine since we just deleted it
> That comment is false.  The column may not have been deleted, since the endpoint could still be down.  This causes HHOM to go into an infinite loop trying to deliver hints to a down host.

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