[jira] [Commented] (BEAM-13640) Add MetadataDynamicCoder to support encode-decode for new fields in Metatdata

["Beam JIRA Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/BEAM-13640?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17509475#comment-17509475 ] 

Beam JIRA Bot commented on BEAM-13640:
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This issue is assigned but has not received an update in 30 days so it has been labeled "stale-assigned". If you are still working on the issue, please give an update and remove the label. If you are no longer working on the issue, please unassign so someone else may work on it. In 7 days the issue will be automatically unassigned.

> Add MetadataDynamicCoder to support encode-decode for new fields in Metatdata
> -----------------------------------------------------------------------------
>
>                 Key: BEAM-13640
>                 URL: https://issues.apache.org/jira/browse/BEAM-13640
>             Project: Beam
>          Issue Type: Improvement
>          Components: sdk-java-core
>            Reporter: Brachi Packter
>            Assignee: Brachi Packter
>            Priority: P3
>              Labels: stale-assigned
>          Time Spent: 40m
>  Remaining Estimate: 0h
>
> This Issue is to solve similar problems to wha I had in [BEAM-12883.|https://issues.apache.org/jira/browse/BEAM-12883?page=com.atlassian.jira.plugin.system.issuetabpanels%3Aall-tabpanel]
> Currently there are 2 Coders for Metadata: default one: org.apache.beam.sdk.io.fs.MetadataCoder and enhanced one org.apache.beam.sdk.io.fs.MetadataCoderV2, the last can also decode-encode lastModifiedMillis and it is done in a new coder in order to support backward compatibility.
> This will be hard to maintain, we will need to create a new coder for any new field that will be added to Metadata.
> So, as suggested in this [comment: #15510|https://github.com/apache/beam/pull/15510#issuecomment-928390587], we need to have some new generic coder : MetadataDynamicCoder.
> MetadataDynamicCoder can decode/encode any new fields added to Metadata by sending getter, setter and coder.



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