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https://issues.apache.org/jira/browse/PIG-5318?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16283321#comment-16283321
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Nandor Kollar commented on PIG-5318:
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Attached PIG-5318_6.patch, found an universal way to tell the current Spark
version, that works with both Spark 1.6.x and Spark 2.x too, and there's no
need to start SparkContext. (thanks [~gezapeti] :) )
> Unit test failures on Pig on Spark with Spark 2.2
> -------------------------------------------------
>
> Key: PIG-5318
> URL: https://issues.apache.org/jira/browse/PIG-5318
> Project: Pig
> Issue Type: Bug
> Components: spark
> Reporter: Nandor Kollar
> Assignee: Nandor Kollar
> Attachments: PIG-5318_1.patch, PIG-5318_2.patch, PIG-5318_3.patch,
> PIG-5318_4.patch, PIG-5318_5.patch, PIG-5318_6.patch
>
>
> There are several failing cases when executing the unit tests with Spark 2.2:
> {code}
> org.apache.pig.test.TestAssert#testNegativeWithoutFetch
> org.apache.pig.test.TestAssert#testNegative
> org.apache.pig.test.TestEvalPipeline2#testNonStandardDataWithoutFetch
> org.apache.pig.test.TestScalarAliases#testScalarErrMultipleRowsInInput
> org.apache.pig.test.TestStore#testCleanupOnFailureMultiStore
> org.apache.pig.test.TestStoreInstances#testBackendStoreCommunication
> org.apache.pig.test.TestStoreLocal#testCleanupOnFailureMultiStore
> {code}
> All of these are related to fixes/changes in Spark.
> TestAssert, TestScalarAliases and TestEvalPipeline2 failures could be fixed
> by asserting on the message of the exception's root cause, looks like on
> Spark 2.2 the exception is wrapped into an additional layer.
> TestStore and TestStoreLocal failure are also a test related problems: looks
> like SPARK-7953 is fixed in Spark 2.2
> The root cause of TestStoreInstances is yet to be found out.
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