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Posted to issues@hbase.apache.org by "Vladimir Rodionov (JIRA)" <ji...@apache.org> on 2016/04/15 02:36:25 UTC
[jira] [Commented] (HBASE-15506) FSDataOutputStream.write()
allocates new byte buffer on each operation
[ https://issues.apache.org/jira/browse/HBASE-15506?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15242225#comment-15242225 ]
Vladimir Rodionov commented on HBASE-15506:
-------------------------------------------
{quote}
I am only saying that a statement like "heap allocations are bad" is simply not generally true.
{quote}
I can't concur here with you. Frequent allocations -> frequent minor GC collections -> frequent stw pauses - bad 99%.
> FSDataOutputStream.write() allocates new byte buffer on each operation
> ----------------------------------------------------------------------
>
> Key: HBASE-15506
> URL: https://issues.apache.org/jira/browse/HBASE-15506
> Project: HBase
> Issue Type: Improvement
> Reporter: Vladimir Rodionov
> Assignee: Vladimir Rodionov
>
> Deep inside stack trace in DFSOutputStream.createPacket.
> This should be opened in HDFS. This JIRA is to track HDFS work.
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