[jira] [Resolved] (KAFKA-866) Recover segment does shallow iteration to fix index causing inconsistencies

["Jun Rao (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-866?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jun Rao resolved KAFKA-866.
---------------------------

       Resolution: Fixed
    Fix Version/s: 0.8

Thanks for the patch. +1. Committed to 0.8.
                
> Recover segment does shallow iteration to fix index causing inconsistencies
> ---------------------------------------------------------------------------
>
>                 Key: KAFKA-866
>                 URL: https://issues.apache.org/jira/browse/KAFKA-866
>             Project: Kafka
>          Issue Type: Bug
>    Affects Versions: 0.8
>            Reporter: Sriram Subramanian
>            Assignee: Sriram Subramanian
>            Priority: Blocker
>              Labels: kafka-0.8, p1
>             Fix For: 0.8
>
>         Attachments: KAFKA-866.patch, KAFKA-866-v2.patch
>
>
> When we recover a segment, we do a shallow iteration to fix the index. This creates entries in the index with the last logical offset in a compressed messageSet. However, during log append we use the starting offset in a compressed message set to populate the index (We changed to starting offset recently). This causes inconsistencies. 

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