GitHub user ericl opened a pull request:
https://github.com/apache/spark/pull/13814
[SPARK-16003] SerializationDebugger runs into infinite loop
## What changes were proposed in this pull request?
This fixes SerializationDebugger to not recurse forever when `writeReplace`
returns an object of the same class, which is the case for at least the
`SQLMetrics` class.
See also the OpenJDK unit tests on the behavior of recursive
`writeReplace()`:
https://github.com/openjdk-mirror/jdk7u-jdk/blob/f4d80957e89a19a29bb9f9807d2a28351ed7f7df/test/java/io/Serializable/nestedReplace/NestedReplace.java
cc @davies @cloud-fan
## How was this patch tested?
Unit tests for SerializationDebugger.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ericl/spark spark-16003
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/13814.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 #13814
----
commit 3237c278003d4ab956cd3be6148793f4c405cc42
Author: Eric Liang <[email protected]>
Date: 2016-06-21T20:09:04Z
Tue Jun 21 13:09:04 PDT 2016
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