Milco Numan created NIFI-7544:
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Summary: ReplaceText processor seems not thread-safe?
Key: NIFI-7544
URL: https://issues.apache.org/jira/browse/NIFI-7544
Project: Apache NiFi
Issue Type: Bug
Components: Core Framework
Affects Versions: 1.11.4
Environment: Red Hat Enterprise Linux 7.8
openjdk version "11.0.7" 2020-04-14 LTS
OpenJDK Runtime Environment 18.9 (build 11.0.7+10-LTS)
OpenJDK 64-Bit Server VM 18.9 (build 11.0.7+10-LTS, mixed mode, sharing)
Reporter: Milco Numan
We have a flow where there are separate flow files containing a single string.
We use the ReplaceText processor to prepend this string by a parameter name
(for use in an actual URI, as query parameter) and postfix the string by an
ampersand:
When using this processor with number of concurrrent tasks > 1 (4 in our case),
we have seen it happening that content of file-A is inserted as the result of
file-B, it seems as if the process is not thread safe where the actual search
value is captured.
We can see from the logfile (created by inserting LogAttribute processors
logging uuid and the actual content after all steps in the process) that the
input of one file is overwritten with the search/replace pattern of another
file (just before it), see uploaded log file
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