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https://issues.apache.org/jira/browse/SPARK-3135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14103588#comment-14103588
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Apache Spark commented on SPARK-3135:
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User 'rxin' has created a pull request for this issue:
https://github.com/apache/spark/pull/2054
> Avoid memory copy in TorrentBroadcast serialization
> ---------------------------------------------------
>
> Key: SPARK-3135
> URL: https://issues.apache.org/jira/browse/SPARK-3135
> Project: Spark
> Issue Type: Sub-task
> Reporter: Reynold Xin
> Labels: starter
>
> TorrentBroadcast.blockifyObject uses a ByteArrayOutputStream to serialize
> broadcast object into a single giant byte array, and then separates it into
> smaller chunks. We should implement a new OutputStream that writes
> serialized bytes directly into chunks of byte arrays so we don't need the
> extra memory copy.
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