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From "Jonathan Ellis (JIRA)" <>
Subject [jira] [Commented] (CASSANDRA-8720) Provide tools for finding wide row/partition keys
Date Mon, 02 Feb 2015 22:33:37 GMT


Jonathan Ellis commented on CASSANDRA-8720:

In <= 2.0, we log every row larger than in_memory_compaction limit.  Isn't that enough?

(For 2.1 we should probably add back similar functionality... /cc [~krummas])

> Provide tools for finding wide row/partition keys
> -------------------------------------------------
>                 Key: CASSANDRA-8720
>                 URL:
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: J.B. Langston
> Multiple users have requested some sort of tool to help identify wide row keys. They
get into a situation where they know a wide row/partition has been inserted and it's causing
problems for them but they have no idea what the row key is in order to remove it.  
> Maintaining the widest row key currently encountered and displaying it in cfstats would
be one possible approach.
> Another would be an offline tool (possibly an enhancement to sstablekeys) to show the
number of columns/bytes per key in each sstable. If a tool to aggregate the information at
a CF-level could be provided that would be a bonus, but it shouldn't be too hard to write
a script wrapper to aggregate them if not.

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