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From "Lars Hofhansl (JIRA)" <>
Subject [jira] [Commented] (PHOENIX-1694) Update statistics fail to complete when client disconnects
Date Wed, 04 Mar 2015 02:00:09 GMT


Lars Hofhansl commented on PHOENIX-1694:

Hmm... Not offhand. Would need to check the code. The count() is running with the lease still
in place (as discussed in some other issue) so the lease expires while the query is running.

Generally, I would not even have an update statistics command. That did make sense maybe for
RDBMSs, but for BigData it does not. IMHO... stats are updated by compactions and otherwise
out of date.

> Update statistics fail to complete when client disconnects
> ----------------------------------------------------------
>                 Key: PHOENIX-1694
>                 URL:
>             Project: Phoenix
>          Issue Type: Bug
>    Affects Versions: 5.0.0, 4.3
>         Environment: HBase 0.98.10, Phoenix 4.3 branch
>            Reporter: Mujtaba Chohan
>            Assignee: James Taylor
>            Priority: Minor
> [~jamestaylor] You mentioned that after initiating _update statistics_ command even if
client disconnects, statistics would still get generated by server side process. 
> Just checked this. As soon as client disconnects stats table population halts if client
disconnects any time after update statistics command is issued.

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