Comparison Method Violates Its General Contract
Problem:
When clicking Component Linkage on the dashboard, an error message "Comparison method violates its general contract" is displayed.
Cause:
The error is caused by an incompatible sorting in the JDK after the JAR upgrading, resulting in a Java sorting exception error.
Solution:
Go to the FineBI directory %FineBI%/bin, open FineBI.vmoptions, open it with Notepad, and add the following parameters into it.
Djava.util.Arrays.useLegacyMergeSort=true
Save it and restart FineBI.
Platform Lag or Failure to Log in
Problem:
Go to %FineBI%/logsto check fanruan.log, and you may find that the number of filtering conditions where the query has increased greatly.
Cause:
You have performed header filtering and set the component linkage with other components, leading to a massive increase in the number of filtering conditions in where query. The request with an excessively long list of filtering conditions has blocked the engine.
Solution:
Download Fine_conf_entity Visual Configuration Plugin to add the parameter SystemOptimizationConfig.queryConditionCountRestriction. You can obtain the plugin at Welcome to FineReport Community!.
The parameter means the limitation quantity of filtering conditions when you perform querying.
Default value: null(no restriction)
Recommended value: 30. The value can be smaller, which depends on your filtering scenario.
Effect: A query with the number of filtering conditions exceeding the limit will be interrupted, and an error will be reported: condition count out of restriction: xxxx.
