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https://issues.apache.org/jira/browse/SPARK-9783?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Cheng Lian updated SPARK-9783:
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Sprint: Spark 1.5 doc/QA sprint
Environment: (was: PR #8035 made a quick fix for SPARK-9743 by
introducing an extra {{refresh()}} call in {{JSONRelation.buildScan}}.
Obviously it hurts performance. To overcome this, we can use
{{SqlNewHadoopRDD}} there and override {{listStatus()}} to inject cached
{{FileStatus}} instances, similar as what we did in {{ParquetRelation}}.)
Description: PR #8035 made a quick fix for SPARK-9743 by introducing an
extra {{refresh()}} call in {{JSONRelation.buildScan}}. Obviously it hurts
performance. To overcome this, we can use {{SqlNewHadoopRDD}} there and
override {{listStatus()}} to inject cached {{FileStatus}} instances, similar as
what we did in {{ParquetRelation}}.
> Use SqlNewHadoopRDD in JSONRelation to eliminate extra refresh() call
> ---------------------------------------------------------------------
>
> Key: SPARK-9783
> URL: https://issues.apache.org/jira/browse/SPARK-9783
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.5.0
> Reporter: Cheng Lian
> Assignee: Cheng Lian
> Priority: Blocker
>
> PR #8035 made a quick fix for SPARK-9743 by introducing an extra
> {{refresh()}} call in {{JSONRelation.buildScan}}. Obviously it hurts
> performance. To overcome this, we can use {{SqlNewHadoopRDD}} there and
> override {{listStatus()}} to inject cached {{FileStatus}} instances, similar
> as what we did in {{ParquetRelation}}.
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