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From "Thomas Graves (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-6235) Address various 2G limits
Date Mon, 21 May 2018 17:18:00 GMT

    [ https://issues.apache.org/jira/browse/SPARK-6235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16482746#comment-16482746
] 

Thomas Graves commented on SPARK-6235:
--------------------------------------

>> Still unsupported:
 * large task results

 * large blocks in the WAL
 * individual records larger than 2 GB

 

Can you clarify what WAL is?

I have seen individual records larger then 2GB, I don't think its as common though.

Also can you clarify large task results? 

> Address various 2G limits
> -------------------------
>
>                 Key: SPARK-6235
>                 URL: https://issues.apache.org/jira/browse/SPARK-6235
>             Project: Spark
>          Issue Type: Umbrella
>          Components: Shuffle, Spark Core
>            Reporter: Reynold Xin
>            Priority: Major
>         Attachments: SPARK-6235_Design_V0.02.pdf
>
>
> An umbrella ticket to track the various 2G limit we have in Spark, due to the use of
byte arrays and ByteBuffers.



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