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https://issues.apache.org/jira/browse/FLUME-1968?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13628196#comment-13628196
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Mike Percy commented on FLUME-1968:
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Also, what is the problem we are solving by getting rid of tracking the exact
offsets?
> FileChannel new format while being backwards compatible
> -------------------------------------------------------
>
> Key: FLUME-1968
> URL: https://issues.apache.org/jira/browse/FLUME-1968
> Project: Flume
> Issue Type: Bug
> Components: Channel, File Channel
> Reporter: Brock Noland
>
> There are a couple issues with the current format:
> 1) We have to track the offset at checkpoint time and write the offset to a
> special location so we can seek to that offset during replay. In FLUME-1516
> we are tracking two offsets.
> 2) We have no way to detect partial writes FLUME-1967
> 3) We can only checksum the body of the event, not the entire record
> FLUME-1485 and therefore cannot detect corruption outside an event body.
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