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FirstUseAssemblerException when compiling MapValue rules



FirstUseAssemblerException when compiling MapValue rules which are more than 1400 rows. This occurs post upgrading from PRPC 6.3 SP1 environment to Pega 7.3.1.

Error Messages

Caused by: Failed to compile generated Java com.pegarules.generated.mapvalue.ra_action_end_deterpremium_8b69f4a42921fe434ab8b9d183a363b4: ----------
1. ERROR in \com\pegarules\generated\mapvalue\ (at line 43)
public void perform() {
The code of method perform() is exceeding the 65535 bytes limit
1 problem (1 error)
Compile failed.

Steps to Reproduce

Create a MapValue with 1500 rows and execute it.

Root Cause

A 64K limit is set on the size of a Java method; this limit is intrinsic to Java. The Java code generated to support these rows results in the main method exceeding the 64K byte limit.


Perform the following local-change:

Split the MapValue rule in to multiple smaller rules (it is possible to have one MapValue rule reference another). Additionally, an enhancement request, FDBK-24868, is created for consideration by Pega Product Management.



Suggest Edit

Published July 23, 2018 - Updated October 8, 2020

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