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https://issues.apache.org/jira/browse/HDFS-8146?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14499664#comment-14499664
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Vinayakumar B commented on HDFS-8146:
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I think, instead of having 2D arrays to have multiple ECRecovery tasks,
1. we can have a separate PB message for {{BlockECRecoveryInfo}}
2. In {{BlockECRecoveryCommand}}'s PB message we can have repeated field for
{{BlockECRecoveryInfoProto}}.
bq. Similarly, should we use a DatanodeStorageInfo to represent each target?
But that requires adding PB support for DatanodeStorageInfo itself..
For the PB'fication of {{DatanodeStorageInfo}} we can have two separate PB
fields, {{DatanodeInfoProto}} and {{StorageTypeProto}}. Since this is just a
target, we dont need other details in PB message. Samething done in
BlockCommand too.
> Protobuf changes for BlockECRecoveryCommand and its fields for making it
> ready for transfer to DN
> --------------------------------------------------------------------------------------------------
>
> Key: HDFS-8146
> URL: https://issues.apache.org/jira/browse/HDFS-8146
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Uma Maheswara Rao G
> Assignee: Uma Maheswara Rao G
> Attachments: HDFS-8146.0.patch
>
>
> As part of working on HDFS-8137, we need to prepare BlockECRecoveryCommand,
> BlockECRecoveryInfo, DatanodeStorageInfo, DatanodeDescripter (We can use
> DatanodeInfo for proto trasfer) should be ready in proto format for
> transferring them in command. Since all this code could be straight forward
> and to have better focussed review on core part, I propose to separate this
> part in to this JIRA. First I will prepare all this supported classes
> protobuf ready and then trasnfer them to DN as part of HDFS-8137 by including
> ECSchema.
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