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Posted to hdfs-dev@hadoop.apache.org by "Jitendra Nath Pandey (JIRA)" <ji...@apache.org> on 2019/05/14 05:29:00 UTC
[jira] [Resolved] (HDDS-1491) Ozone KeyInputStream seek() should
not read the chunk file
[ https://issues.apache.org/jira/browse/HDDS-1491?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jitendra Nath Pandey resolved HDDS-1491.
----------------------------------------
Resolution: Fixed
Fix Version/s: 0.5.0
> Ozone KeyInputStream seek() should not read the chunk file
> ----------------------------------------------------------
>
> Key: HDDS-1491
> URL: https://issues.apache.org/jira/browse/HDDS-1491
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Reporter: Hanisha Koneru
> Assignee: Hanisha Koneru
> Priority: Major
> Labels: pull-request-available
> Fix For: 0.5.0
>
> Time Spent: 2h 50m
> Remaining Estimate: 0h
>
> KeyInputStream#seek() calls BlockInputStream#seek() to adjust the buffer position to the seeked position. As part of the seek operation, the whole chunk is read from the container and stored in the buffer so that the buffer position can be advanced to the seeked position.
> We should not read from disk on a seek() operation. Instead, for a read operation, when the chunk file is read and put in the buffer, at that time, we can advance the buffer position to the previously seeked position.
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