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https://issues.apache.org/jira/browse/TINKERPOP-1331?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15322659#comment-15322659
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Daniel Kuppitz commented on TINKERPOP-1331:
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Integration tests are still running (just to verify that I didn't break
anything, not that copy from/to DFS does actually work). I've made a little
refactoring, moving most of the {{addJar}} code into
{{AbstractHadoopGraphComputer}} as it was the same for {{SparkGraphComputer}}
and {{GiraphGraphComputer}}.
See:
https://github.com/apache/incubator-tinkerpop/commit/447941ded4d5fecd731036e7f5df748edca92273
And I have one more change locally (not yet pushed), where I also take {{;}} as
a path separator into account.
> HADOOP_GREMLIN_LIBS can only point to local file system
> -------------------------------------------------------
>
> Key: TINKERPOP-1331
> URL: https://issues.apache.org/jira/browse/TINKERPOP-1331
> Project: TinkerPop
> Issue Type: Improvement
> Components: hadoop
> Affects Versions: 3.2.0-incubating, 3.1.2-incubating
> Reporter: Daniel Kuppitz
>
> These two lines in {{SparkGraphComputer}} assume that {{HADOOP_GREMLIN_LIBS}}
> will only contain local file system references (although it seems that the
> rest of the code could handle DFS references):
> {code}
> final String[] paths = hadoopGremlinLocalLibs.split(":");
> final FileSystem fs = FileSystem.get(hadoopConfiguration);
> {code}
> If, for example, {{HADOOP_GREMLIN_LIBS}} would be set to
> {{hdfs:///spark-gremlin-libs:/foo/bar}}, the {{split(":")}} call would
> obviously separate the file system scheme ({{hdfs://}}) from the path
> ({{/spark-gremlin-libs}}).
> Next, {{FileSystem.get(hadoopConfiguration)}} will always only return a
> reference to the {{FileSystem}} that is defined as the default file system.
> The same is probably true for {{GiraphGraphComputer}}.
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