Dustin Koupal created LIVY-763:
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Summary: FD leak in InteractiveSession and PythonInterpreter
Key: LIVY-763
URL: https://issues.apache.org/jira/browse/LIVY-763
Project: Livy
Issue Type: Bug
Components: Interpreter, Server
Affects Versions: 0.7.0, 0.6.0
Reporter: Dustin Koupal
We recently upgraded from Livy 0.4 to Livy 0.6 and started to run out of FDs
(we fire up thousands of InteractiveSessions a day). Looking at the open FDs,
they were all DIR handles for `/usr/lib/spark/python/lib`.
I believe this change was introduced in
https://github.com/apache/incubator-livy/commit/1bbefe601641aa4db74dbed1f7faf458b9a70a63#diff-7649a51ad4bddc91b6f1038e06479d41R259-R264
The behavior without this change and the default config is Livy will open 2 FDs
for each InteractiveSession, and they will never be closed (I think because
`DirectoryStream` is
`AutoCloseable` and try-with-resource doesn't work with Scala's `Try`.
As a workaround, in our production clusters, we have set
`livy.rsc.pyspark.archives` to an empty string in `livy.conf`
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