[
https://issues.apache.org/jira/browse/SPARK-16841?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Sean Zhong closed SPARK-16841.
------------------------------
Resolution: Not A Problem
> Improves the row level metrics performance when reading Parquet table
> ---------------------------------------------------------------------
>
> Key: SPARK-16841
> URL: https://issues.apache.org/jira/browse/SPARK-16841
> Project: Spark
> Issue Type: Improvement
> Reporter: Sean Zhong
>
> When reading Parquet table, Spark adds row level metrics like recordsRead,
> bytesRead
> (https://github.com/apache/spark/blob/v2.0.0/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/FileScanRDD.scala#L93).
> The implementation is not very efficient. When parquet vectorized reader is
> not used, it may take 20% of read time to update these metrics.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
