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Posted to issues@beam.apache.org by "Beam JIRA Bot (Jira)" <ji...@apache.org> on 2020/08/18 17:07:32 UTC

[jira] [Updated] (BEAM-1065) FileBasedSource: replace SeekableByteChannel with open(spec, startingPosition)

     [ https://issues.apache.org/jira/browse/BEAM-1065?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Beam JIRA Bot updated BEAM-1065:
--------------------------------
    Labels: stale-P2  (was: )

> FileBasedSource: replace SeekableByteChannel with open(spec, startingPosition)
> ------------------------------------------------------------------------------
>
>                 Key: BEAM-1065
>                 URL: https://issues.apache.org/jira/browse/BEAM-1065
>             Project: Beam
>          Issue Type: Sub-task
>          Components: sdk-java-core
>            Reporter: Pei He
>            Priority: P2
>              Labels: stale-P2
>
> FileBasedReader should be able to open the file with the Source.getStartOffset(), and then read forward to find the first input element.
> The benefits are:
> 1. It is easier to implement a ReadableByteChannel.
> 2. Dynamically splitting won't require file systems to support seeking.
> 3. Doesn't need to seek to position twice, which is what current API does.



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