HDFS-11363. Need more diagnosis info when seeing Slow waitForAckedSeqno.

(cherry picked from commit 0914fcca31)
2017-02-02 10:08:27 -08:00 · 2017-02-02 10:08:27 -08:00 · b0a1703f10
parent c699ce70ea
commit b0a1703f10
1 changed files with 3 additions and 2 deletions
--- a/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DataStreamer.java
+++ b/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DataStreamer.java
@ -847,8 +847,9 @@ class DataStreamer extends Daemon {
      }
      long duration = Time.monotonicNow() - begin;
      if (duration > dfsclientSlowLogThresholdMs) {
-        LOG.warn("Slow waitForAckedSeqno took " + duration
-            + "ms (threshold=" + dfsclientSlowLogThresholdMs + "ms)");
+        LOG.warn("Slow waitForAckedSeqno took {}ms (threshold={}ms). File being"
+                + " written: {}, block: {}, Write pipeline datanodes: {}.",
+            duration, dfsclientSlowLogThresholdMs, src, block, nodes);
      }
    }
  }