GitHub user maxwellzdm opened a pull request:
https://github.com/apache/spark/pull/8955
[SPARK-5569] [STREAMING] fix ObjectInputStreamWithLoader for supporting
load array classes.
When use Kafka DirectStream API to create checkpoint and restore saved
checkpoint when restart,
ClassNotFound exception would occur.
The reason for this error is that ObjectInputStreamWithLoader extends the
ObjectInputStream class and override its resolveClass method. But Instead of
Using Class.forName(desc,false,loader), Spark uses loader.loadClass(desc) to
instance the class, which do not works with array class.
For example:
Class.forName("[Lorg.apache.spark.streaming.kafka.OffsetRange.",false,loader)
works well while
loader.loadClass("[Lorg.apache.spark.streaming.kafka.OffsetRange") would throw
an class not found exception.
details of the difference between Class.forName and loader.loadClass can be
found here.
http://bugs.java.com/view_bug.do?bug_id=6446627
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/maxwellzdm/spark master
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/8955.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 #8955
----
commit 929fec4445d8857e1d7833c9c848ad18226f60e9
Author: DEMING ZHU <deming....@linecorp.com>
Date: 2015-10-01T07:24:38Z
fix ObjectInputStreamWithLoader for supporting load array classes.
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