Uima aggregate with embedded Cas Multiplier fails if one attempts to create
multiple instances of it in the same JVM
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Key: UIMA-1400
URL: https://issues.apache.org/jira/browse/UIMA-1400
Project: UIMA
Issue Type: Bug
Components: Core Java Framework
Affects Versions: 2.2.2
Reporter: Jerry Cwiklik
When trying to scale Uima aggregate with a Cas Multiplier in the same JVM, the
code fails with the following:
org.apache.uima.analysis_engine.AnalysisEngineProcessException: The
method CasManager.defineCasPool() was called twice by the same Analysis
Engine
This is due to the fact that the CasManager creates a single CAS pool for any
given Cas Multiplier, no matter how many instances of it are created. The first
instance of a particular CM creates a CAS Pool and the pool is associated with
that instance using a CM's qualified name obtained from the component's uima
context. The second instance of the same CM fails, since its trying to create
another CAS pool with the same qualified name as the first instance.
Create and assign a unique name in the Uima context for each instance of a
component. Use the unique name when calling defineCasPool() so that every
instance of the CM component creates its own CAS pool.
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