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Posted to commits@beam.apache.org by mizitch <gi...@git.apache.org> on 2016/10/26 22:54:08 UTC
[GitHub] incubator-beam pull request #1199: [BEAM-840] Add Java SDK extension to supp...
GitHub user mizitch opened a pull request:
https://github.com/apache/incubator-beam/pull/1199
[BEAM-840] Add Java SDK extension to support non-distributed sorting
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Add an extension that provides a PTransform which performs local(non-distributed) sorting. It will sort in memory until the buffer is full, then flush to disk and use external sorting.
Consumes a PCollection of KVs from primary key to iterable of secondary key and value KVs and sorts the iterables. Would probably be called after a GroupByKey. Uses coders to convert secondary keys and values into byte arrays and does a lexicographical comparison on the secondary keys.
Uses Hadoop as an external sorting library.
Hi @dhalperi can you please take a look?
https://issues.apache.org/jira/browse/BEAM-840
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/mizitch/incubator-beam sorter-extension
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/incubator-beam/pull/1199.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #1199
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commit e18fd4080b9331953c6cd8ba1fa509cfe56c787b
Author: Mitch Shanklin <ms...@google.com>
Date: 2016-10-25T23:17:01Z
Add an extension that provides a PTransform which performs local(non-distributed) sorting. It will sort in memory until the buffer is full, then flush to disk and use external sorting.
Consumes a PCollection of KVs from primary key to iterable of secondary key and value KVs and sorts the iterables. Would probably be called after a GroupByKey. Uses coders to convert secondary keys and values into byte arrays and does a lexicographical comparison on the secondary keys.
Uses Hadoop as an external sorting library.
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[GitHub] incubator-beam pull request #1199: [BEAM-840] Add Java SDK extension to supp...
Posted by asfgit <gi...@git.apache.org>.
Github user asfgit closed the pull request at:
https://github.com/apache/incubator-beam/pull/1199
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