GitHub user tdas opened a pull request:
https://github.com/apache/spark/pull/5024
[SPARK-6331] Load new master URL if present when recovering streaming
context from checkpoint
In streaming driver recovery, when the SparkConf is reconstructed based on
the checkpointed configuration, it recovers the old master URL. This okay if
the cluster on which the streaming application is relaunched is the same
cluster as it was running before. But if that cluster changes, there is no way
to inject the new master URL of the new cluster. As a result, the restarted app
tries to connect to the non-existent old cluster and fails.
The solution is to check whether a master URL is set in the System
properties (by Spark submit) before recreating the SparkConf. If a new master
url is set in the properties, then use it as that is obviously the most
relevant one. Otherwise load the old one (to maintain existing behavior).
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/tdas/spark SPARK-6331
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/5024.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 #5024
----
commit 222485d3f93143ff46cc8473ab6f1b1a3a23ecb0
Author: Tathagata Das <[email protected]>
Date: 2015-03-14T01:58:15Z
Load new master URL if present when recovering streaming context from
checkpoint
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