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Posted to issues@orc.apache.org by "Gopal V (JIRA)" <ji...@apache.org> on 2017/07/25 02:15:03 UTC

[jira] [Comment Edited] (ORC-91) Use hdfs v-blocks instead of zero-padding stripes

    [ https://issues.apache.org/jira/browse/ORC-91?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16099397#comment-16099397 ] 

Gopal V edited comment on ORC-91 at 7/25/17 2:14 AM:
-----------------------------------------------------

There's one release where using any HDFS only APIs will break ORC (2.7.3) - due to HADOOP-14132


was (Author: gopalv):
There's one release where using any HDFS only APIs will break ORC (2.7.3) - due to https://issues.apache.org/jira/browse/HADOOP-14132

> Use hdfs v-blocks instead of zero-padding stripes
> -------------------------------------------------
>
>                 Key: ORC-91
>                 URL: https://issues.apache.org/jira/browse/ORC-91
>             Project: ORC
>          Issue Type: Improvement
>            Reporter: Gopal V
>            Assignee: Gopal V
>
> HDFS-3689 added variable length blocks to HDFS as a core feature.
> hsync(SyncFlag.END_BLOCK) 
> can now end an HDFS block on disk without padding it out with zeros. 
> The current space wasted in ORC to padding is 5%.



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