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From "Keith Turner (JIRA)" <>
Subject [jira] [Commented] (ACCUMULO-466) add a default constraint to limit the size of keys
Date Tue, 09 Oct 2012 22:32:02 GMT


Keith Turner commented on ACCUMULO-466:

Could also make the Accumulo file output format do something similar.  It would throw an error
if you try to write a really large key.  If the user really wants to do this, they can configure
the output format to accept larger keys.

Should this be a 1.5 fix?
> add a default constraint to limit the size of keys
> --------------------------------------------------
>                 Key: ACCUMULO-466
>                 URL:
>             Project: Accumulo
>          Issue Type: Improvement
>          Components: master
>            Reporter: Eric Newton
>            Assignee: Eric Newton
>             Fix For: 1.4.2
> If a user mistakenly inserts extremely large keys, the tablet server will eventually
run out of memory just loading indexes.  This is almost certainly a mistake.  Add a constraint,
by default, to new tables, which will limit the size of a key to a megabyte, for example,
to catch these kinds of errors earlier.  If the user intends to use very large keys, they
can always remove the constraint.

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