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https://issues.apache.org/jira/browse/OOZIE-2547?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15322820#comment-15322820
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Rohini Palaniswamy commented on OOZIE-2547:
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bq. As a general question, have you tested this with NN HA? I'm concerned about
SparkMain#fixFsDefaultUris because it does some URI host/port
parsing/manipulation.
It should be safe. Basically what it does is if the fs.defaultFS is defined
as hdfs://cluster-nn.domain.com:8020, it changes the following urls to
hdfs://cluster-nn.domain.com:8020/path
- hdfs://cluster-nn.domain.com/path
- hdfs:///path
- hdfs://cluster-nn.domain.com:8020/path (remains same)
If the fs.defaultFS is defined as hdfs://cluster-nn.domain.com, then it will
change all of them to hdfs://cluster-nn.domain.com/path. If the paths
authority does not exactly match with fs.defaultFS, Spark does a reupload to
hdfs and then localizes it. This is to avoid that.
> Add mapreduce.job.cache.files to spark action
> ---------------------------------------------
>
> Key: OOZIE-2547
> URL: https://issues.apache.org/jira/browse/OOZIE-2547
> Project: Oozie
> Issue Type: Bug
> Reporter: Satish Subhashrao Saley
> Assignee: Satish Subhashrao Saley
> Priority: Minor
> Attachments: OOZIE-2547-1.patch, OOZIE-2547-4.patch,
> yarn-cluster_launcher.txt
>
>
> Currently, we pass jars using --jars option while submitting spark job. Also,
> we add spark.yarn.dist.files option in case of yarn-client mode.
> Instead of that, we can have only --files option and pass on the files which
> are present in mapreduce.job.cache.files. While doing so, we make sure that
> spark won't make another copy of the files if files exist on the hdfs. We saw
> the issues when files are getting copied multiple times and causing
> exceptions such as :
> {code}
> Diagnostics: Resource
> hdfs://localhost/user/saley/.sparkStaging/application_1234_123/oozie-examples.jar
> changed on src filesystem
> {code}
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