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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] Assigned: (CASSANDRA-715) HHOM goes into infinite loop, wasting cpu
Date Tue, 19 Jan 2010 15:42:54 GMT

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

Jonathan Ellis reassigned CASSANDRA-715:
----------------------------------------

    Assignee: Jonathan Ellis

> 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
>
>
> 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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