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https://issues.apache.org/jira/browse/SPARK-21271?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16070973#comment-16070973
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Kazuaki Ishizaki commented on SPARK-21271:
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I see. I will work for this.
Thank you for letting us how to fix it. I has been thinking about {{ + 4 }}. I
also saw the similar code in
[here|https://github.com/apache/spark/blob/master/sql/catalyst/src/main/java/org/apache/spark/sql/catalyst/expressions/VariableLengthRowBasedKeyValueBatch.java#L68]
> UnsafeRow.hashCode assertion when sizeInBytes not multiple of 8
> ---------------------------------------------------------------
>
> Key: SPARK-21271
> URL: https://issues.apache.org/jira/browse/SPARK-21271
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.2.0
> Reporter: Bogdan Raducanu
>
> The method is:
> {code}
> public int hashCode() {
> return Murmur3_x86_32.hashUnsafeWords(baseObject, baseOffset,
> sizeInBytes, 42);
> }
> {code}
> but sizeInBytes is not always a multiple of 8 (in which case hashUnsafeWords
> throws assertion) - for example here:
> {code}FixedLengthRowBasedKeyValueBatch.appendRow{code}
> The fix could be to use hashUnsafeBytes or to use hashUnsafeWords but on a
> prefix that is multiple of 8.
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