HDFS-16235. Fix Deadlock in LeaseRenewer for static remove method (#3472)

(cherry picked from commit 5f9321a5d4)
2021-09-25 18:17:44 +08:00 · 2021-09-25 18:17:44 +08:00 · 4475d8bfe7
commit 4475d8bfe7
parent 06954af6f0
1 changed files with 3 additions and 1 deletions
--- a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/client/impl/LeaseRenewer.java
+++ b/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/client/impl/LeaseRenewer.java
@ -96,8 +96,10 @@ public static LeaseRenewer getInstance(final String authority,
   * @param renewer Instance to be cleared from Factory
   */
  public static void remove(LeaseRenewer renewer) {
+    synchronized (renewer) {
      Factory.INSTANCE.remove(renewer);
    }
+  }

  /**
   * A factory for sharing {@link LeaseRenewer} objects