GitHub user rxin opened a pull request:
https://github.com/apache/spark/pull/2470
[SPARK-3613] Record only average block size in MapStatus for large stages
This changes the way we send MapStatus from executors back to driver for
large stages (>2000 tasks). For large stages, we no longer send one byte per
block. Instead, we just send the average block size.
This makes large jobs (tens of thousands of tasks) much more reliable since
the driver no longer sends huge amount of data.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/rxin/spark mapstatus
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/2470.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 #2470
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commit d139abe0850c671166b8cf260d6852c8aa7797e5
Author: Reynold Xin <[email protected]>
Date: 2014-09-20T08:19:31Z
[SPARK-3613] Record only average block size in MapStatus for large stages.
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