When processing a large matter you observe that all collector and processing actions are completed except for the LegalReview Indexer actions which are in a scheduled state. Upon closer investigation you observe these actions are not completing and as a result, the job will not complete.
In the IndexingService.log you see the following error:
2015-12-10 09:51:47,971 MACHINENAME  WARN - Search(470636) error: "[ER_REFINE:0,0]".
In the ZyLAB.EDiscovery.Review.Standalone.log you observe an error that looks like following:
2015-12-10 09:51:47,971 MACHINENAME  WARN ZyLAB.EDiscovery.Common.Workflow.Retry - Attempt 908 failed. Retrying...
ZyLAB.EDiscovery.Common.ZyIndex.PlatformSearchException: Search error ER_REFINE occurred.
CompileTermExpansionThreshold value must be increased.
- In '\Program Files\ZyLAB\Information Management Platform\Services\Bin' folder, find the 'ZyLAB.Platform.WinService.exe.config' file and make a back up.
- Increase the value for key CompileTermExpansionThreshold like in the below example:
<!-- Maximum number of terms single query is allowed to have
(affects wildcard expansion). Default = 1000000 -->
<add key="CompileTermExpansionThreshold" value="100000000" />
- Go to the Services panel and restart 'ZyLAB Information Management Service x64'
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