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https://issues.apache.org/jira/browse/HDFS-16757?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17876721#comment-17876721
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ASF GitHub Bot commented on HDFS-16757:
---------------------------------------
LiuGuH commented on code in PR #6926:
URL: https://github.com/apache/hadoop/pull/6926#discussion_r1731228580
##########
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java:
##########
@@ -136,6 +136,11 @@ public class DFSConfigKeys extends CommonConfigurationKeys
{
"dfs.datanode.ec.reconstruct.write.bandwidthPerSec";
public static final long
DFS_DATANODE_EC_RECONSTRUCT_WRITE_BANDWIDTHPERSEC_DEFAULT =
0; // A value of zero indicates no limit
+ public static final String
DFS_DATANODE_COPY_BLOCK_CROSS_NAMESPACE_SOCKET_TIMEOUT_MS_KEY =
Review Comment:
This is used for copyBlockCrossNamespaceExecutor task timeout. And it
not , a task will block until it sucess or failed. This can be removed or
retain.
> Add a new method copyBlockCrossNamespace to DataNode
> ----------------------------------------------------
>
> Key: HDFS-16757
> URL: https://issues.apache.org/jira/browse/HDFS-16757
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: ZanderXu
> Assignee: Haiyang Hu
> Priority: Minor
> Labels: pull-request-available
>
> Add a new method copyBlockCrossNamespace in DataTransferProtocol at the
> DataNode Side.
> This method will copy a source block from one namespace to a target block
> from a different namespace. If the target DN is the same with the current DN,
> this method will copy the block via HardLink. If the target DN is different
> with the current DN, this method will copy the block via TransferBlock.
> This method will contains some parameters:
> * ExtendedBlock sourceBlock
> * Token<BlockTokenIdentifier> sourceBlockToken
> * ExtendedBlock targetBlock
> * Token<BlockTokenIdentifier> targetBlockToken
> * DatanodeInfo targetDN
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