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https://issues.apache.org/jira/browse/HDFS-14079?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16699987#comment-16699987
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Surendra Singh Lilhore commented on HDFS-14079:
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Attached initial patch. Pls review.
# Added new property *"dfs.federation.router.admin-address.list"*, user can
configure comma separated router admin address. Client will fail over on
connection exception.
# If above property is not configured then it will
*"dfs.federation.router.admin-address"* property and connect with only one
router.
# With fail over option safemode command send rpc to random router, to solve
this problem added one option in safemode command *"-routers <router_list>"*.
User can pass the list of router which he want to move in safe mode.
> 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
>
>
> 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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