GitHub user mukulmurthy opened a pull request:
https://github.com/apache/spark/pull/22176
[SPARK-25181][CORE] Limit Thread Pool size in BlockManager Master and Slave
endpoints
## What changes were proposed in this pull request?
Limit Thread Pool size in BlockManager Master and Slave endpoints.
Currently, BlockManagerMasterEndpoint and BlockManagerSlaveEndpoint both
have thread pools with nearly unbounded (Integer.MAX_VALUE) numbers of threads.
In certain cases, this can lead to driver OOM errors. This change limits the
thread pools to 100 threads; this should not break any existing behavior
because any tasks beyond that number will get queued.
## How was this patch tested?
Manual testing
Please review http://spark.apache.org/contributing.html before opening a
pull request.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/mukulmurthy/oss-spark 25181-threads
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/22176.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 #22176
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commit c2223c3862619d2191ea787f3a2ee3c0d8d67ff2
Author: Mukul Murthy <mukul.murthy@...>
Date: 2018-08-21T23:16:11Z
Limit thread pools in BlockManager Master and Slave endpoints
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