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Date: Wed, 10 Jul 2013 22:55:48 +0000 (UTC)
From: "Jonathan Ellis (JIRA)" <jira@apache.org>
To: commits@cassandra.apache.org
Message-ID: <JIRA.12657166.1373496858875.29229.1373496948626@arcas>
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Subject: [jira] [Created] (CASSANDRA-5746) HHOM.countPendingHints is a trap
 for the unwary
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Jonathan Ellis created CASSANDRA-5746:
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             Summary: HHOM.countPendingHints is a trap for the unwary
                 Key: CASSANDRA-5746
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5746
             Project: Cassandra
          Issue Type: Bug
          Components: Core, Tools
            Reporter: Jonathan Ellis
            Assignee: Tyler Hobbs
             Fix For: 2.0.1


countPendingHints can OOM the server fairly easily since it does a per-target seq scan without paging.

More generally, countPendingHints is far too slow to be useful for routine monitoring.

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