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https://issues.apache.org/jira/browse/HDFS-10880?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16385482#comment-16385482
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maobaolong commented on HDFS-10880:
-----------------------------------
[~elgoiri] Thank you to contribute this feature. But i don't see any use about
the DestinationOrder.
{code:java}
public enum DestinationOrder {
HASH, // Follow consistent hashing
LOCAL, // Local first
RANDOM // Random order
}
{code}
I've seen the use of multiTarget in RouterRpcClient like invokeConcurrent and
invokeSequential method, I know the use of multiTarget there seems to ensure FT.
Please show more use case about the multiTarget and destinationOrder, I want to
use and test those cool features. Thank you.
> Federation Mount Table State Store internal API
> -----------------------------------------------
>
> Key: HDFS-10880
> URL: https://issues.apache.org/jira/browse/HDFS-10880
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: fs
> Reporter: Jason Kace
> Assignee: Íñigo Goiri
> Priority: Major
> Fix For: 2.9.0, 3.0.0
>
> Attachments: HDFS-10880-HDFS-10467-000.patch,
> HDFS-10880-HDFS-10467-001.patch, HDFS-10880-HDFS-10467-002.patch,
> HDFS-10880-HDFS-10467-003.patch, HDFS-10880-HDFS-10467-004.patch,
> HDFS-10880-HDFS-10467-005.patch, HDFS-10880-HDFS-10467-006.patch,
> HDFS-10880-HDFS-10467-007.patch, HDFS-10880-HDFS-10467-008.patch
>
>
> The Federation Mount Table State encapsulates the mapping of file paths in
> the global namespace to a specific NN(nameservice) and local NN path. The
> mount table is shared by all router instances and represents a unified view
> of the global namespace. The state store API for the mount table allows the
> related records to be queried, updated and deleted.
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