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When starting the Appian services, the startup stalls at "Waiting for Service Manager to launch," and the following exception appears in the application server log:
java.lang.IllegalStateException: Expected the service to be TERMINATED, but the service has FAILED...Caused by: com.typesafe.config.ConfigException$WrongType: <APPIAN_HOME>/ear/suite.ear/conf/custom.properties: loadMetric.threshold has type STRING rather than NUMBER
The server.conf.processcommon.MAX_EXEC_ENGINE_LOAD_METRIC= line listed in custom.properties is set equal to a value that is being read as a string rather than a number. If this line is set equal to a variable that is defined (as an integer) in a separate configuration file, this file containing the integer value is not being properly implemented/read.
Ensure that the server.conf.processcommon.MAX_EXEC_ENGINE_LOAD_METRIC= line listed in custom.properties is set equal to an integer value, whether the integer is listed explicitly in custom.properties or through a variable that calls an integer value from a separate configuration file.
If a variable (that is defined in a separate configuration file) is being used to define this value, and the separate configuration file is not being properly implemented/read, set server.conf.processcommon.MAX_EXEC_ENGINE_LOAD_METRIC= equal to an integer value explicitly in custom.properties.
This article applies to Appian 17.3 and later.
Last Reviewed: April 2018
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