HDFS-9423. Fix intermittent failure of TestEditLogTailer. Contributed by Masatake Iwasaki.

(cherry picked from commit 201f14e2714895ad8262507f5b9deb3521770e91)

hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt

@@ -1504,6 +1504,9 @@ Release 2.8.0 - UNRELEASED
     HDFS-9435. TestBlockRecovery#testRBWReplicas is failing intermittently.
     (Rakesh R via waltersu4549)
 
+    HDFS-9423. Fix intermittent failure of TestEditLogTailer.
+    (Masatake Iwasaki via waltersu4549)
+
 Release 2.7.3 - UNRELEASED
 
   INCOMPATIBLE CHANGES

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestEditLogTailer.java

@@ -60,6 +60,7 @@ public class TestEditLogTailer {
       ServiceFailedException {
     Configuration conf = new HdfsConfiguration();
     conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1);
+    conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_ALL_NAMESNODES_RETRY_KEY, 100);
 
     HAUtil.setAllowStandbyReads(conf, true);
     
@@ -120,6 +121,7 @@ public class TestEditLogTailer {
     // Roll every 1s
     conf.setInt(DFSConfigKeys.DFS_HA_LOGROLL_PERIOD_KEY, 1);
     conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1);
+    conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_ALL_NAMESNODES_RETRY_KEY, 100);
     
     // Have to specify IPC ports so the NNs can talk to each other.
     MiniDFSNNTopology topology = new MiniDFSNNTopology()