Github user StephanEwen commented on the pull request:
https://github.com/apache/incubator-flink/pull/188#issuecomment-62367133
I guess the tricky thing with the approach to switch to a different temp
directory is the following:
You may start writing to a file when the disk has a lot of space, and the
file itself grows larger than the remaining space. For all serious jobs, single
temp files grow larger than the discussed 100 MB limit.
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