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https://issues.apache.org/jira/browse/HDFS-11504?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15973609#comment-15973609
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Xiaoyu Yao commented on HDFS-11504:
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Thanks [~anu] for the detailed review. Update patch v5 addressed the comments.
I leave the the blockkey as-is and will open separate ticket to handle that.
> Ozone: SCM: Add AllocateBlock/DeleteBlock/GetBlock APIs
> -------------------------------------------------------
>
> Key: HDFS-11504
> URL: https://issues.apache.org/jira/browse/HDFS-11504
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Affects Versions: HDFS-7240
> Reporter: Xiaoyu Yao
> Assignee: Xiaoyu Yao
> Attachments: HDFS-11504-HDFS-7240.001.patch,
> HDFS-11504-HDFS-7240.002.patch, HDFS-11504-HDFS-7240.003.patch,
> HDFS-11504-HDFS-7240.004.patch, HDFS-11504-HDFS-7240.005.patch
>
>
> The signature of the APIs are listed below. This allows SCM to
> 1) allocateBlock for client and maintain the key->container mapping in level
> DB in addition to the existing container to pipeline mapping in level DB.
> 2) return the pipeline of a block based on the key.
> 3) remove the block based on the key of the block.
> {code}
> <Pipeline,key> allocateBlock(long size)
> <Pipeline> getBlock(key);
> void deleteBlock(key);
> {code}
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