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https://issues.apache.org/jira/browse/PARQUET-78?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14122174#comment-14122174
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Parth Chandra commented on PARQUET-78:
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Added a pull request -
https://github.com/apache/incubator-parquet-mr/pull/50
> Provide a ByteBuffer based write path
> -------------------------------------
>
> Key: PARQUET-78
> URL: https://issues.apache.org/jira/browse/PARQUET-78
> Project: Parquet
> Issue Type: Improvement
> Components: parquet-mr
> Reporter: Parth Chandra
>
> Similar to the effort to use a ByteBuffer in the read path, we should provide
> a path to use a ByteBuffer in the write path.
> The proposed idea is to provide an allocator in the writer that is passed
> down to CapacityByteArrayOutputStream and is used to allocate a ByteBuffer
> instead of the byte array that it currently uses.
> I've attached a patch based on the 1.5 release that does that. There are two
> implementations of the allocator - one for Heap memory and one for Direct
> memory. In addition, the allocator interface allows for a 'release' method so
> that reference counted memory allocators like Netty's ByteBuf can be used to
> provide an allocator.
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