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From "Jonathan Ellis (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-3206) increase file descriptor limit in deb, rpm packages
Date Wed, 14 Sep 2011 16:43:09 GMT


Jonathan Ellis commented on CASSANDRA-3206:

Jeremy pointed out that we can also use a large number of FDs during compaction: either major
compaction for tiered strategy, or a L0 compaction under Leveled, can open an effectively
arbitrary number of sstables if compaction is behind.

> increase file descriptor limit in deb, rpm packages
> ---------------------------------------------------
>                 Key: CASSANDRA-3206
>                 URL:
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Packaging
>            Reporter: Jonathan Ellis
>            Assignee: paul cannon
>            Priority: Minor
>             Fix For: 0.8.6
> We can use a lot of file descriptors (one per socket, 5? per sstable).  People hit this
regularly on the user list and it will get worse with Leveled compaction, which limits sstable
size to a relatively low size (currently 5MB).

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