Iván Ezequiel Rodriguez created NIFI-6800:
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Summary: StandardProcessSession error - hashmap counter
overwritten in highThroughputSession
Key: NIFI-6800
URL: https://issues.apache.org/jira/browse/NIFI-6800
Project: Apache NiFi
Issue Type: Bug
Components: Core Framework
Affects Versions: 1.9.2
Reporter: Iván Ezequiel Rodriguez
Assignee: Iván Ezequiel Rodriguez
The error is on line 3383 in the following code block:
if (session.countersOnCommit != null) {
this.countersOnCommit.putAll(session.countersOnCommit);
}
The putALL method is called and the values are not being mixed when it comes
to existing keys
As we know hashmap does not allow duplicate keys. So when we merge the maps in
this way, for duplicate keys in map1 the value is overwitten by value for same
key in map2.
This replacement causes the counters to be overwritten when
highThroughputSession is activated.This situation only happens if the flag
"immediately" is false in the call at method adjustCounter, since in this way
the counters are adjusted in the commit and stored in each checkpoint.
I leave a video showing the error and the request for changes in git with the
solution in the code that I propose:
[Nifi Bug StandardProcessSession error - hashmap counter overwritten in
highThroughputSession|https://youtu.be/DzwEQWmxNKc]
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