Attila Doroszlai created HDDS-12331:
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Summary: BlockOutputStream.failedServers is not thread-safe
Key: HDDS-12331
URL: https://issues.apache.org/jira/browse/HDDS-12331
Project: Apache Ozone
Issue Type: Bug
Components: Ozone Client
Reporter: Attila Doroszlai
{{ConcurrentModificationException}} of {{BlockOutputStream#failedServers}}:
{code}
[INFO] Running
org.apache.hadoop.ozone.client.rpc.TestMultiBlockWritesWithDnFailures
[ERROR] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 42.017
s <<< FAILURE! - in
org.apache.hadoop.ozone.client.rpc.TestMultiBlockWritesWithDnFailures
[ERROR]
org.apache.hadoop.ozone.client.rpc.TestMultiBlockWritesWithDnFailures.testMultiBlockWritesWithIntermittentDnFailures
Time elapsed: 41.997 s <<< ERROR!
java.io.IOException: java.util.ConcurrentModificationException
at
org.apache.hadoop.ozone.client.io.KeyOutputStream.handleWrite(KeyOutputStream.java:293)
at
org.apache.hadoop.ozone.client.io.KeyOutputStream.lambda$write$1(KeyOutputStream.java:249)
at
org.apache.hadoop.ozone.client.io.KeyOutputStream.doInWriteLock(KeyOutputStream.java:260)
at
org.apache.hadoop.ozone.client.io.KeyOutputStream.write(KeyOutputStream.java:248)
at
org.apache.hadoop.ozone.client.io.OzoneOutputStream.write(OzoneOutputStream.java:94)
at java.base/java.io.OutputStream.write(OutputStream.java:124)
at
org.apache.hadoop.ozone.client.rpc.TestMultiBlockWritesWithDnFailures.testMultiBlockWritesWithIntermittentDnFailures(TestMultiBlockWritesWithDnFailures.java:216)
at java.base/java.lang.reflect.Method.invoke(Method.java:580)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1596)
Caused by: java.util.ConcurrentModificationException
at java.base/java.util.ArrayList.forEach(ArrayList.java:1598)
at
org.apache.hadoop.hdds.scm.container.common.helpers.ExcludeList.addDatanodes(ExcludeList.java:82)
at
org.apache.hadoop.ozone.client.io.KeyOutputStream.handleStreamAction(KeyOutputStream.java:617)
at
org.apache.hadoop.ozone.client.io.KeyOutputStream.handleFlushOrClose(KeyOutputStream.java:590)
at
org.apache.hadoop.ozone.client.io.KeyOutputStream.handleWrite(KeyOutputStream.java:287)
... 9 more
{code}
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