{"action":"created","comment":{"url":"https://api.github.com/repos/Alluxio/alluxio/pulls/comments/57766952","id":57766952,"diff_hunk":"@@ -64,40 +69,35 @@\n    */\n   private synchronized void initializeLocalBlockWorkerClientPool() {\n     if (!mLocalBlockWorkerClientPoolInitialized) {\n-      WorkerNetAddress localWorkerAddress =\n-          getWorkerAddress(NetworkAddressUtils.getLocalHostName(ClientContext.getConf()));\n-      // If the local worker is not available, do not initialize the local worker client pool.\n-      if (localWorkerAddress == null) {\n-        mLocalBlockWorkerClientPool = null;\n-      } else {\n-        mLocalBlockWorkerClientPool = new BlockWorkerClientPool(localWorkerAddress);\n+      for (WorkerNetAddress localWorkerAddress : getWorkerAddresses(\n+          NetworkAddressUtils.getLocalHostName(ClientContext.getConf()))) {\n+        mLocalBlockWorkerClientPoolMap.put(localWorkerAddress,\n+            new BlockWorkerClientPool(localWorkerAddress));\n       }\n       mLocalBlockWorkerClientPoolInitialized = true;\n     }\n   }\n \n   /**\n-   * Gets the worker address based on its hostname by querying the master.\n+   * Gets the worker addresses with the given hostname by querying the master. Returns all the\n+   * addresses, if the hostname is an empty string.\n    *\n    * @param hostname hostname of the worker to query, empty string denotes any worker\n-   * @return {@link WorkerNetAddress} of hostname, or null if no worker found\n+   * @return {@link List} of {@link WorkerNetAddress} of hostname","path":"core/client/src/main/java/alluxio/client/block/BlockStoreContext.java","position":49,"original_position":49,"commit_id":"5d1790d693c79225a9305b07fece2f225bb907c3","original_commit_id":"5d1790d693c79225a9305b07fece2f225bb907c3","user":{"login":"calvinjia","id":2223813,"avatar_url":"https://avatars.githubusercontent.com/u/2223813?v=3","gravatar_id":"","url":"https://api.github.com/users/calvinjia","html_url":"https://github.com/calvinjia","followers_url":"https://api.github.com/users/calvinjia/followers","following_url":"https://api.github.com/users/calvinjia/following{/other_user}","gists_url":"https://api.github.com/users/calvinjia/gists{/gist_id}","starred_url":"https://api.github.com/users/calvinjia/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/calvinjia/subscriptions","organizations_url":"https://api.github.com/users/calvinjia/orgs","repos_url":"https://api.github.com/users/calvinjia/repos","events_url":"https://api.github.com/users/calvinjia/events{/privacy}","received_events_url":"https://api.github.com/users/calvinjia/received_events","type":"User","site_admin":false},"body":"Let's not link java data structures?","created_at":"2016-03-29T17:45:04Z","updated_at":"2016-03-29T17:45:04Z","html_url":"https://github.com/Alluxio/alluxio/pull/2912#discussion_r57766952","pull_request_url":"https://api.github.com/repos/Alluxio/alluxio/pulls/2912","_links":{"self":{"href":"https://api.github.com/repos/Alluxio/alluxio/pulls/comments/57766952"},"html":{"href":"https://github.com/Alluxio/alluxio/pull/2912#discussion_r57766952"},"pull_request":{"href":"https://api.github.com/repos/Alluxio/alluxio/pulls/2912"}}},"pull_request":{"url":"https://api.github.com/repos/Alluxio/alluxio/pulls/2912","id":63972689,"html_url":"https://github.com/Alluxio/alluxio/pull/2912","diff_url":"https://github.com/Alluxio/alluxio/pull/2912.diff","patch_url":"https://github.com/Alluxio/alluxio/pull/2912.patch","issue_url":"https://api.github.com/repos/Alluxio/alluxio/issues/2912","number":2912,"state":"open","locked":false,"title":"[ALLUXIO-1835] Change the client to support multiple workers on a local node","user":{"login":"yupeng9","id":13425258,"avatar_url":"https://avatars.githubusercontent.com/u/13425258?v=3","gravatar_id":"","url":"https://api.github.com/users/yupeng9","html_url":"https://github.com/yupeng9","followers_url":"https://api.github.com/users/yupeng9/followers","following_url":"https://api.github.com/users/yupeng9/following{/other_user}","gists_url":"https://api.github.com/users/yupeng9/gists{/gist_id}","starred_url":"https://api.github.com/users/yupeng9/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/yupeng9/subscriptions","organizations_url":"https://api.github.com/users/yupeng9/orgs","repos_url":"https://api.github.com/users/yupeng9/repos","events_url":"https://api.github.com/users/yupeng9/events{/privacy}","received_events_url":"https://api.github.com/users/yupeng9/received_events","type":"User","site_admin":false},"body":"A client can only connect to one worker on a machine, using the hostname as the identifier. 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