sodonnel commented on a change in pull request #2728:
URL: https://github.com/apache/hadoop/pull/2728#discussion_r610529393
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File path:
hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DataStreamer.java
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@@ -905,6 +907,14 @@ void waitForAckedSeqno(long seqno) throws IOException {
}
try {
dataQueue.wait(1000); // when we receive an ack, we notify on
+ long duration = Time.monotonicNow() - begin;
+ if (duration > writeTimeout) {
+ LOG.error("No ack received, took {}ms (threshold={}ms). "
+ + "File being written: {}, block: {}, "
+ + "Write pipeline datanodes: {}.",
+ duration, writeTimeout, src, block, nodes);
+ throw new InterruptedIOException("No ack received. ");
Review comment:
I think it would be good to log the duration waited and perhaps the
timeout in the exception, eg:
```
throw new InterruptedIOException("No ack received after " + duration / 1000
+ "s and a timeout of " + writeTimeout / 1000 + "s");
```
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