[jira] [Updated] (HDDS-4094) Support byte-leve write in Freon HadoopFsGenerator
[
https://issues.apache.org/jira/browse/HDDS-4094?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
ASF GitHub Bot updated HDDS-4094:
-
Labels: pull-request-available (was: )
> Support byte-leve write in Freon HadoopFsGenerator
> --
>
> Key: HDDS-4094
> URL: https://issues.apache.org/jira/browse/HDDS-4094
> Project: Hadoop Distributed Data Store
> Issue Type: Improvement
>Reporter: Marton Elek
>Assignee: Marton Elek
>Priority: Major
> Labels: pull-request-available
>
> Teragen seems to use the byte level write method of FSDataOutputStream
> (write(byte) is used instead of write(byte[], int, int)).
> It seems to be a good idea to extend existing `ContentGenerator` of ozone to
> support the write in smaller chunks to make it easier to reproduce
> performance problems.
> Note: statistics from FileSystem instance:
> {code}
> Closing file system instance: 1257412274
>write.call: 11066
>write.allTime: 215951
>hsync.call: 1
>hsync.allTime: 3
>hflush.call: 0
>hflush.allTime: 0
>close.call: 4
>close.allTime: 62
> {code}
> This was a teragen test with 1GB data (and statistics from one container).
> write method seems to be called multiple times which means smaller write
> buffer.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
-
To unsubscribe, e-mail: ozone-issues-unsubscr...@hadoop.apache.org
For additional commands, e-mail: ozone-issues-h...@hadoop.apache.org
[jira] [Updated] (HDDS-4094) Support byte-leve write in Freon HadoopFsGenerator
[
https://issues.apache.org/jira/browse/HDDS-4094?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Attila Doroszlai updated HDDS-4094:
---
Labels: (was: pull-request-available)
> Support byte-leve write in Freon HadoopFsGenerator
> --
>
> Key: HDDS-4094
> URL: https://issues.apache.org/jira/browse/HDDS-4094
> Project: Hadoop Distributed Data Store
> Issue Type: Improvement
>Reporter: Marton Elek
>Assignee: Marton Elek
>Priority: Major
> Fix For: 0.7.0
>
>
> Teragen seems to use the byte level write method of FSDataOutputStream
> (write(byte) is used instead of write(byte[], int, int)).
> It seems to be a good idea to extend existing `ContentGenerator` of ozone to
> support the write in smaller chunks to make it easier to reproduce
> performance problems.
> Note: statistics from FileSystem instance:
> {code}
> Closing file system instance: 1257412274
>write.call: 11066
>write.allTime: 215951
>hsync.call: 1
>hsync.allTime: 3
>hflush.call: 0
>hflush.allTime: 0
>close.call: 4
>close.allTime: 62
> {code}
> This was a teragen test with 1GB data (and statistics from one container).
> write method seems to be called multiple times which means smaller write
> buffer.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
-
To unsubscribe, e-mail: ozone-issues-unsubscr...@hadoop.apache.org
For additional commands, e-mail: ozone-issues-h...@hadoop.apache.org
