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https://issues.apache.org/jira/browse/PIG-3940?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Philip (flip) Kromer updated PIG-3940:
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Attachment: 0001-Fixed-NullPointerException-writing-.pig_header-for-f.patch
Patch, with test for bug
> NullPointerException writing .pig_header for field with null name (in
> JsonMetadata.java)
> ----------------------------------------------------------------------------------------
>
> Key: PIG-3940
> URL: https://issues.apache.org/jira/browse/PIG-3940
> Project: Pig
> Issue Type: Bug
> Components: impl
> Affects Versions: 0.12.0
> Reporter: Philip (flip) Kromer
> Labels: PigStorage, schema, storage
> Attachments:
> 0001-Fixed-NullPointerException-writing-.pig_header-for-f.patch
>
>
> Pig throws an NPE writing .pig_header for field with null name. Attached
> patch has it instead write field name as '$i' corresponding to the field's
> zero-based position -- i.e., if the second field is unnamed, its header will
> be written as $1.
> {code}
> Caused by: java.lang.NullPointerException
> at
> org.apache.pig.builtin.JsonMetadata.storeSchema(JsonMetadata.java:319)
> at org.apache.pig.builtin.PigStorage.storeSchema(PigStorage.java:578)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigOutputCommitter.storeCleanup(PigOutputCommitter.java:144)
> {code}
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