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Posted to issues@spark.apache.org by "poplav (JIRA)" <ji...@apache.org> on 2017/08/23 18:36:00 UTC
[jira] [Commented] (SPARK-18656)
org.apache.spark.sql.execution.stat.StatFunctions#multipleApproxQuantiles
requires too much memory in case of many columns
[ https://issues.apache.org/jira/browse/SPARK-18656?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16138853#comment-16138853 ]
poplav commented on SPARK-18656:
--------------------------------
[~barrybecker4], Any more insights into this. I am going to have to do this for about 3000 columns. Are you chunking your queries into smaller batches like running multipleApproxQuantiles on batches of 100 at a time?
> org.apache.spark.sql.execution.stat.StatFunctions#multipleApproxQuantiles requires too much memory in case of many columns
> --------------------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-18656
> URL: https://issues.apache.org/jira/browse/SPARK-18656
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Reporter: Sina Sohangir
> Original Estimate: 1h
> Remaining Estimate: 1h
>
> org.apache.spark.sql.execution.stat.StatFunctions#multipleApproxQuantiles
> Is implemented in a way that is causes out of memory error for cases where the number of columns are high.
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