GitHub user countmdm opened a pull request:
https://github.com/apache/spark/pull/21811
[SPARK-24801][CORE] Avoid memory waste by empty byte[] arrays in
SaslEncryption$EncryptedMessage
## What changes were proposed in this pull request?
Initialize SaslEncryption$EncryptedMessage.byteChannel lazily,
so that empty, not yet used instances of ByteArrayWritableChannel
referenced by this field don't use up memory.
## How was this patch tested?
Ran all the tests locally.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/countmdm/spark misha/spark-24801
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/21811.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 #21811
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commit 8b465341314b1cbbef726950d589d5fb49db341b
Author: Misha Dmitriev <misha@...>
Date: 2018-07-18T21:57:27Z
[SPARK-24801][CORE] Avoid memory waste by empty byte[] arrays in
SaslEncryption$EncryptedMessage
Initialize SaslEncryption$EncryptedMessage.byteChannel lazily,
so that empty, not yet used instances of ByteArrayWritableChannel
referenced by this field don't use up memory.
Ran all the tests locally.
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