GitHub user juliuszsompolski opened a pull request:
https://github.com/apache/spark/pull/21171
[SPARK-24104] SQLAppStatusListener overwrites metrics onDriverAccumUpdates
instead of updating them
## What changes were proposed in this pull request?
Event `SparkListenerDriverAccumUpdates` may happen multiple times in a
query - e.g. every `FileSourceScanExec` and `BroadcastExchangeExec` call
`postDriverMetricUpdates`.
In Spark 2.2 `SQLListener` updated the map with new values.
`SQLAppStatusListener` overwrites it.
Unless `update` preserved it in the KV store (dependant on
`exec.lastWriteTime`), only the metrics from the last operator that does
`postDriverMetricUpdates` are preserved.
## How was this patch tested?
Unit test added.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/juliuszsompolski/apache-spark SPARK-24104
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/21171.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 #21171
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commit 69e09cc770514bdb7964b8552456bf7a83df7588
Author: Juliusz Sompolski <julek@...>
Date: 2018-04-26T17:52:04Z
onDriverAccumUpdates
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