Support Article
NullPointerException occurs and the servers do not start
SA-58424
Summary
The following Dynamic System Settings (DSS) are set to false, and restarted.
indexing/distributed/enabled
indexing/distributed/index_enabled
indexing/distributed/search_enabled
Post restart, NullPointerException occurs and the servers do not start.
Error Messages
[STANDARD] [ ] [ ] ( etier.impl.EngineStartup) ERROR - PegaRULES initialization failed. Server: SERVER_NAME
com.pega.pegarules.pub.context.InitializationFailedError: PRNodeImpl init failed
at com.pega.pegarules.session.internal.mgmt.PREnvironment.getThreadAndInitialize(PREnvironment.java:397)
at com.pega.pegarules.session.internal.PRSessionProviderImpl.getThreadAndInitialize(PRSessionProviderImpl.java:2005)
at com.pega.pegarules.session.internal.engineinterface.etier.impl.EngineStartup.initEngine(EngineStartup.java:666)
Caused by:
com.pega.pegarules.pub.PRRuntimeException: Method Invocation exception
at com.pega.pegarules.session.internal.PRSessionProviderImpl.performTargetActionWithLock(PRSessionProviderImpl.java:1279)
... 51 more
Caused by:
java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60)
... 54 more
Caused by:
java.lang.NullPointerException
at com.pega.pegarules.session.internal.async.startup.SearchInitializationTask.runTask(SearchInitializationTask.java:43)
at com.pega.pegarules.session.internal.async.startup.StartupTaskUtil.runTask(StartupTaskUtil.java:68)
at com.pega.pegarules.session.internal.mgmt.PREnvironment.finishInit(PREnvironment.java:537)
Steps to Reproduce
Unknown
Root Cause
In Pega 7.2, modifying the DSS settings to False resulted in Null Pointer exception during Search initialization and the elastic server did not start.
Resolution
Perform the following local-change:
1. Delete the affected DSS entries from the pr_data_admin database table.
Below is an example query:
DELETE FROM prpc_data.pr_data_admin WHERE pypurpose='indexing/distributed/index_enabled';
Add the following settings in prconfig.xml.
<env name="indexing/distributed/enabled" value="true" />
<env name="indexing/distributed/index_enabled" value="true" />
<env name=" indexing/distributed/search_enabled" value="true" />
2. Perform a restart.
Alternatively, update to Pega 7.2.1
Published July 23, 2018 - Updated October 8, 2020
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