[jira] [Commented] (HBASE-26122) Limit max result size of individual Gets

["Michael Stack (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-26122?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17396407#comment-17396407 ] 

Michael Stack commented on HBASE-26122:
---------------------------------------

The above shell example would make nice release note. Added some comments on the PR.

> Limit max result size of individual Gets
> ----------------------------------------
>
>                 Key: HBASE-26122
>                 URL: https://issues.apache.org/jira/browse/HBASE-26122
>             Project: HBase
>          Issue Type: New Feature
>          Components: Client, regionserver
>            Reporter: Bryan Beaudreault
>            Assignee: Bryan Beaudreault
>            Priority: Major
>
> Scans have the ability to have a configured max result size, which causes them to return a partial result once the limit has been reached. MultiGets also can throw MultiActionResultTooLarge if the response size is over a configured quota. Neither of these really accounts for a single Get of a too-large row. Such too-large Gets can cause substantial GC pressure or worse if sent at volume.
> Currently one can work around this by converting their Get to a single row Scan, but this requires a developer to proactively know about and prepare for the issue by using a Scan upfront or wait for the RegionServer to choke on a large request and only then rewrite the Get for future requests.
> We should implement the same response size limits for for Get as for Scan, whereby the server returns a partial result to the client for handling.



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