[jira] [Assigned] (SPARK-17839) UnsafeSorterSpillReader should use Nio's directbuffer to read the spill files in order to avoid additional copy
[ https://issues.apache.org/jira/browse/SPARK-17839?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Apache Spark reassigned SPARK-17839: Assignee: (was: Apache Spark) > UnsafeSorterSpillReader should use Nio's directbuffer to read the spill files > in order to avoid additional copy > --- > > Key: SPARK-17839 > URL: https://issues.apache.org/jira/browse/SPARK-17839 > Project: Spark > Issue Type: Improvement > Components: Shuffle >Affects Versions: 2.0.1 >Reporter: Sital Kedia >Priority: Minor > > Currently we use BufferedInputStream to read the shuffle file which copies > the file content from os buffer cache to the user buffer. This adds > additional latency in reading the spill files. We made a change to use java > nio's direct buffer to read the spill files and for certain jobs spilling > significant amount of data, we see between 5 - 7% speedup. -- This message was sent by Atlassian JIRA (v6.3.4#6332) - To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org
[jira] [Assigned] (SPARK-17839) UnsafeSorterSpillReader should use Nio's directbuffer to read the spill files in order to avoid additional copy
[ https://issues.apache.org/jira/browse/SPARK-17839?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Apache Spark reassigned SPARK-17839: Assignee: Apache Spark > UnsafeSorterSpillReader should use Nio's directbuffer to read the spill files > in order to avoid additional copy > --- > > Key: SPARK-17839 > URL: https://issues.apache.org/jira/browse/SPARK-17839 > Project: Spark > Issue Type: Improvement > Components: Shuffle >Affects Versions: 2.0.1 >Reporter: Sital Kedia >Assignee: Apache Spark >Priority: Minor > > Currently we use BufferedInputStream to read the shuffle file which copies > the file content from os buffer cache to the user buffer. This adds > additional latency in reading the spill files. We made a change to use java > nio's direct buffer to read the spill files and for certain jobs spilling > significant amount of data, we see between 5 - 7% speedup. -- This message was sent by Atlassian JIRA (v6.3.4#6332) - To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org For additional commands, e-mail: issues-h...@spark.apache.org
