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Posted to issues@ozone.apache.org by "Rajesh Balamohan (Jira)" <ji...@apache.org> on 2020/06/01 05:40:00 UTC
[jira] [Created] (HDDS-3692) Consider avoiding stream/map/sum in
write hotpath
Rajesh Balamohan created HDDS-3692:
--------------------------------------
Summary: Consider avoiding stream/map/sum in write hotpath
Key: HDDS-3692
URL: https://issues.apache.org/jira/browse/HDDS-3692
Project: Hadoop Distributed Data Store
Issue Type: Improvement
Components: Ozone Filesystem
Reporter: Rajesh Balamohan
Attachments: image-2020-06-01-11-08-08-711.png
[https://github.com/apache/hadoop-ozone/blob/master/hadoop-hdds/client/src/main/java/org/apache/hadoop/hdds/scm/storage/BufferPool.java#L113]
{noformat}
public long computeBufferData() {
return bufferList.stream().mapToInt(ChunkBuffer::position)
.sum();
}
{noformat}
[https://github.com/apache/hadoop-ozone/blob/master/hadoop-hdds/client/src/main/java/org/apache/hadoop/hdds/scm/storage/BlockOutputStream.java#L256]
[https://github.com/apache/hadoop-ozone/blob/master/hadoop-hdds/client/src/main/java/org/apache/hadoop/hdds/scm/storage/BlockOutputStream.java#L264]
Getting back to regular iteration should fix the issue.
!image-2020-06-01-11-08-08-711.png|width=777,height=564!
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