Github user tgravescs commented on a diff in the pull request:
https://github.com/apache/spark/pull/14887#discussion_r77236626
--- Diff:
common/network-yarn/src/main/java/org/apache/spark/network/yarn/YarnShuffleService.java
---
@@ -25,6 +25,8 @@
import com.google.common.collect.Lists;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.util.DiskChecker;
--- End diff --
So if you aren't using yarn recovery, do you care about this file at all?
ie in your cluster if a nodemanager dies you don't expect it to come back up
and be able to serve shuffle data?
If not perhaps we should make it configurable to not store it in the
levelDB at all.
I'd have to look to see when the recovery feature was added but as long as
that is in early enough hadoop we can just make it dependent upon the yarn
recovery setting.
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