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https://issues.apache.org/jira/browse/HADOOP-13214?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Illes S updated HADOOP-13214:
-----------------------------
    Description: Calling {{sync(0); next(...);}} on a block-compressed 
{{SequenceFile.Reader}} that has already been used may not yield the key-values 
at the beginning, but those following the previous position. The issue is 
caused by {{sync(0)}} not releasing previously buffered keys and values. The 
issue was introduced by HADOOP-6196.  (was: Calling {{sync(0); next(...);}} on 
a block-compressed {{SequenceFileReader}} that has already been used may not 
yield the key-values at the beginning, but those following the previous 
position. The issue is caused by {{sync(0)}} not releasing previously buffered 
keys and values. The issue was introduced by HADOOP-6196)

> sync(0); next(); yields wrong key-values on block-compressed files
> ------------------------------------------------------------------
>
>                 Key: HADOOP-13214
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13214
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: io
>            Reporter: Illes S
>              Labels: easyfix, newbie
>         Attachments: HADOOP-13214.2.patch, HADOOP-13214.patch
>
>
> Calling {{sync(0); next(...);}} on a block-compressed {{SequenceFile.Reader}} 
> that has already been used may not yield the key-values at the beginning, but 
> those following the previous position. The issue is caused by {{sync(0)}} not 
> releasing previously buffered keys and values. The issue was introduced by 
> HADOOP-6196.



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