{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/57521413","id":57521413,"diff_hunk":"@@ -0,0 +1,106 @@\n+/*\n+ * Licensed to the Apache Software Foundation (ASF) under one or more\n+ * contributor license agreements.  See the NOTICE file distributed with\n+ * this work for additional information regarding copyright ownership.\n+ * The ASF licenses this file to You under the Apache License, Version 2.0\n+ * (the \"License\"); you may not use this file except in compliance with\n+ * the License.  You may obtain a copy of the License at\n+ *\n+ *    http://www.apache.org/licenses/LICENSE-2.0\n+ *\n+ * Unless required by applicable law or agreed to in writing, software\n+ * distributed under the License is distributed on an \"AS IS\" BASIS,\n+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n+ * See the License for the specific language governing permissions and\n+ * limitations under the License.\n+ */\n+\n+package org.apache.spark.util\n+\n+import javax.annotation.concurrent.GuardedBy\n+\n+/**\n+ * A special Thread that provides \"runUninterruptibly\" to allow running codes without being\n+ * interrupted by `Thread.interrupt()`. If `Thread.interrupt()` is called during runUninterruptibly\n+ * is running, it won't set the interrupted status. Instead, setting the interrupted status will be\n+ * deferred until it's returning from \"runUninterruptibly\".\n+ *\n+ * Note: this method should be called only in `this` thread.\n+ */\n+private[spark] class UninterruptibleThread(name: String) extends Thread(name) {\n+\n+  /** A monitor to protect \"uninterruptible\" and \"interrupted\" */\n+  private val uninterruptibleLock = new Object\n+\n+  /**\n+   * Indicates if `this`  thread are in the uninterruptible status. If so, interrupting\n+   * \"this\" will be deferred until `this`  enters into the interruptible status.\n+   */\n+  @GuardedBy(\"uninterruptibleLock\")\n+  private var uninterruptible = false\n+\n+  /**\n+   * Indicates if we should interrupt `this` when we are leaving the uninterruptible zone.\n+   */\n+  @GuardedBy(\"uninterruptibleLock\")\n+  private var shouldInterruptThread = false\n+\n+  /**\n+   * Run `f` uninterruptibly in `this` thread. The thread won't be interrupted before returning\n+   * from `f`.\n+   *\n+   * Note: this method should be called only in `this` thread.\n+   */\n+  def runUninterruptibly[T](f: => T): T = {\n+    if (Thread.currentThread() != this) {\n+      throw new IllegalStateException(s\"Call runUninterruptibly in a wrong thread. \" +\n+        s\"Expected: $this but was ${Thread.currentThread()}\")\n+    }\n+","path":"core/src/main/scala/org/apache/spark/util/UninterruptibleThread.scala","position":59,"original_position":59,"commit_id":"8a65a9d1c23bde0db8877ec11b45f8ef234d5748","original_commit_id":"8a65a9d1c23bde0db8877ec11b45f8ef234d5748","user":{"login":"vanzin","id":1694083,"avatar_url":"https://avatars.githubusercontent.com/u/1694083?v=3","gravatar_id":"","url":"https://api.github.com/users/vanzin","html_url":"https://github.com/vanzin","followers_url":"https://api.github.com/users/vanzin/followers","following_url":"https://api.github.com/users/vanzin/following{/other_user}","gists_url":"https://api.github.com/users/vanzin/gists{/gist_id}","starred_url":"https://api.github.com/users/vanzin/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/vanzin/subscriptions","organizations_url":"https://api.github.com/users/vanzin/orgs","repos_url":"https://api.github.com/users/vanzin/repos","events_url":"https://api.github.com/users/vanzin/events{/privacy}","received_events_url":"https://api.github.com/users/vanzin/received_events","type":"User","site_admin":false},"body":"minor: should you bail out early if `shouldInterruptThread` has already been set somehow?","created_at":"2016-03-27T00:31:27Z","updated_at":"2016-03-27T00:31:27Z","html_url":"https://github.com/apache/spark/pull/11971#discussion_r57521413","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/11971","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/57521413"},"html":{"href":"https://github.com/apache/spark/pull/11971#discussion_r57521413"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/11971"}}},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/11971","id":64220140,"html_url":"https://github.com/apache/spark/pull/11971","diff_url":"https://github.com/apache/spark/pull/11971.diff","patch_url":"https://github.com/apache/spark/pull/11971.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/11971","number":11971,"state":"open","locked":false,"title":"[SPARK-14169][Core]Add UninterruptibleThread","user":{"login":"zsxwing","id":1000778,"avatar_url":"https://avatars.githubusercontent.com/u/1000778?v=3","gravatar_id":"","url":"https://api.github.com/users/zsxwing","html_url":"https://github.com/zsxwing","followers_url":"https://api.github.com/users/zsxwing/followers","following_url":"https://api.github.com/users/zsxwing/following{/other_user}","gists_url":"https://api.github.com/users/zsxwing/gists{/gist_id}","starred_url":"https://api.github.com/users/zsxwing/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/zsxwing/subscriptions","organizations_url":"https://api.github.com/users/zsxwing/orgs","repos_url":"https://api.github.com/users/zsxwing/repos","events_url":"https://api.github.com/users/zsxwing/events{/privacy}","received_events_url":"https://api.github.com/users/zsxwing/received_events","type":"User","site_admin":false},"body":"## What changes were proposed in this pull request?\r\n\r\nExtract the workaround for HADOOP-10622 introduced by #11940 into UninterruptibleThread so that we can test and reuse it.\r\n\r\n## How was this patch tested?\r\n\r\nUnit 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