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https://issues.apache.org/jira/browse/HDDS-1067?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16764860#comment-16764860
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Mukul Kumar Singh commented on HDDS-1067:
-----------------------------------------
The block write is waiting for the put block future to finish, on Ratis client
timemout, the entry should be removed from the future list.
{code}
"pool-2-thread-1" #15 prio=5 os_prio=0 tid=0x00007f24a4dea000 nid=0xfb waiting
on condition [0x00007f2483dfe000]
java.lang.Thread.State: WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00000000e96cc8b0> (a
java.util.concurrent.CompletableFuture$Signaller)
at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
at
java.util.concurrent.CompletableFuture$Signaller.block(CompletableFuture.java:1693)
at
java.util.concurrent.ForkJoinPool.managedBlock(ForkJoinPool.java:3323)
at
java.util.concurrent.CompletableFuture.waitingGet(CompletableFuture.java:1729)
at
java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1895)
at
org.apache.hadoop.hdds.scm.storage.BlockOutputStream.waitOnFlushFutures(BlockOutputStream.java:517)
at
org.apache.hadoop.hdds.scm.storage.BlockOutputStream.close(BlockOutputStream.java:484)
at
org.apache.hadoop.ozone.client.io.BlockOutputStreamEntry.close(BlockOutputStreamEntry.java:137)
at
org.apache.hadoop.ozone.client.io.KeyOutputStream.handleFlushOrClose(KeyOutputStream.java:489)
at
org.apache.hadoop.ozone.client.io.KeyOutputStream.handleWrite(KeyOutputStream.java:321)
at
org.apache.hadoop.ozone.client.io.KeyOutputStream.write(KeyOutputStream.java:258)
at
org.apache.hadoop.ozone.client.io.OzoneOutputStream.write(OzoneOutputStream.java:49)
at java.io.OutputStream.write(OutputStream.java:75)
at
org.apache.hadoop.ozone.freon.RandomKeyGenerator$OfflineProcessor.run(RandomKeyGenerator.java:603)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
{code}
> freon run on client gets hung when two of the datanodes are down in 3
> datanode cluster
> --------------------------------------------------------------------------------------
>
> Key: HDDS-1067
> URL: https://issues.apache.org/jira/browse/HDDS-1067
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: Ozone Client
> Reporter: Nilotpal Nandi
> Priority: Major
> Attachments: stack_file.txt
>
>
> steps taken :
> --------------------
> # created 3 node docker cluster.
> # wrote a key
> # created partition such that 2 out of 3 datanodes cannot communicate with
> any other node.
> # Third datanode can communicate with scm, om and the client.
> # ran freon to write key
> Observation :
> -----------------
> freon run is hung. There is no timeout.
>
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