Josef Zahner created NIFI-6908:
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Summary: PutKudu 1.10.0 Memory Leak
Key: NIFI-6908
URL: https://issues.apache.org/jira/browse/NIFI-6908
Project: Apache NiFi
Issue Type: Bug
Components: Extensions
Affects Versions: 1.10.0
Environment: NiFi 1.10.0 8-Node Cluster; Kudu 1.10.0
Reporter: Josef Zahner
Attachments: memory_leak.png
PutKudu 1.10.0 eats up all the heap memory and garbage collection can't anymore
free up memory after a few hours.
We have an NiFi 8-Node cluster (31GB java max memory configured) with a
streaming source which generates constantly about 2'500 flowfiles/2.5GB data in
5 minutes. In our example the streaming source was running on "nifi-05" (green
line). As you can see between 00:00 and 04:00 the memory grows and grows and at
the end the node became instable and the dreaded "java.lang.OutOfMemoryError:
Java heap space" message appeared. With tried to do a manual garbage collection
with visualvm profiler, but it didn't helped.
!memory_leak.png!
We are sure that the PutKudu is the culprit, as we have now taken the codebase
from PutKudu 1.9.2 and use it now in NiFi 1.10.0 without any leaks at all.
Like this our cluster crashed within 5-6 hours with our current load as the
memory was completely full.
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