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From "Tim Preece (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (SPARK-12319) Address endian specific problems surfaced in 1.6
Date Tue, 29 Dec 2015 11:39:49 GMT

    [ https://issues.apache.org/jira/browse/SPARK-12319?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15073821#comment-15073821
] 

Tim Preece commented on SPARK-12319:
------------------------------------

The remaining problem is ExchangeCoordinatorSuite. I don't have the right access to update
the description or title.

> Address endian specific problems surfaced in 1.6
> ------------------------------------------------
>
>                 Key: SPARK-12319
>                 URL: https://issues.apache.org/jira/browse/SPARK-12319
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 1.6.0
>         Environment: Problems apparent on BE, LE could be impacted too
>            Reporter: Adam Roberts
>            Priority: Critical
>
> JIRA to cover endian specific problems - since testing 1.6 I've noticed problems with
DataFrames on BE platforms, e.g. https://issues.apache.org/jira/browse/SPARK-9858
> [~joshrosen] [~yhuai]
> Current progress: using com.google.common.io.LittleEndianDataInputStream and com.google.common.io.LittleEndianDataOutputStream
within UnsafeRowSerializer fixes three test failures in ExchangeCoordinatorSuite but I'm concerned
around performance/wider functional implications
> "org.apache.spark.sql.DatasetAggregatorSuite.typed aggregation: class input with reordering"
fails as we expect "one, 1" but instead get "one, 9" - we believe the issue lies within BitSetMethods.java,
specifically around: return (wi << 6) + subIndex + java.lang.Long.numberOfTrailingZeros(word);




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