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https://issues.apache.org/jira/browse/HDFS-14079?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16701856#comment-16701856
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Brahma Reddy Battula commented on HDFS-14079:
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[~surendrasingh] thanks for reporting and working on this.
* As [~linyiqun] pointed consistency will be problem.we might need to retry
till state store refreshed ( which is by default 60 Sec).looks you used
TRY_ONCE_THEN_FAIL. Please add testcases for that. Ideally admin operations
will be rare(add,ls,safemode..),May be because of this it was not implemented.?
* @ProtocolInfo(protocolName = HdfsConstants.CLIENT_NAMENODE_PROTOCOL_NAME,
Not sure whether this intened.[~elgoiri] can you confirm same.Even this can be
done in seperate jira.
* IMO, Instead of exposing config for admin address(which needs additional
validation),RouterStateManager has admin address like below.SO we can use that?
{code:java}
List<RouterState> cachedRecords =
router.getRouterStateManager().getCachedRecords();
String adminAddress = routerState.getAdminAddress();
{code}
> RBF: RouterAdmin should have failover concept for router
> --------------------------------------------------------
>
> Key: HDFS-14079
> URL: https://issues.apache.org/jira/browse/HDFS-14079
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Affects Versions: 3.1.1
> Reporter: Surendra Singh Lilhore
> Assignee: Surendra Singh Lilhore
> Priority: Major
> Attachments: HDFS-14079-HDFS-13891.01.patch,
> HDFS-14079-HDFS-13891.02.patch
>
>
> Currenlty {{RouterAdmin}} connect with only one router for admin operation,
> if the configured router is down then router admin command is failing. It
> should allow to configure all the router admin address.
> {code}
> // Initialize RouterClient
> try {
> String address = getConf().getTrimmed(
> RBFConfigKeys.DFS_ROUTER_ADMIN_ADDRESS_KEY,
> RBFConfigKeys.DFS_ROUTER_ADMIN_ADDRESS_DEFAULT);
> InetSocketAddress routerSocket = NetUtils.createSocketAddr(address);
> client = new RouterClient(routerSocket, getConf());
> } catch (RPC.VersionMismatch v) {
> System.err.println(
> "Version mismatch between client and server... command aborted");
> return exitCode;
> }
> {code}
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