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Watson Content Analytics (WCA) seedlist crawler error: HTTP 500 error when directed through IBM HTTP Server (IHS)

Troubleshooting


Problem

We are running Wepshere Portal Server (WPS) with 2 nodes and a load balancer and WAS 8.5.5. WPS is integrated with WCA. When creating a seedlist crawler in WCA 3.5 , the crawler runs for X number of files and then fails, as if there is a timeout. The prompt received is a HTTP 500 server error as seen below: FFQD5906E The crawler received an unexpected HTTP status code, 500, when accessing //...:443/.../seedlist/myserver?Action=GetDocuments&Start=300&Range=100&Format=atom&Locale=en_US&Source=com.ibm.workplace.wcm.plugins.seedlist.retriever.WCMRetrieverFactory&SeedlistId= After trying the following URL in a browser the following error is displayed: SEEDLISTAPI0002EAn internal error occurred - Java Exception Message: SeedlistException: SeedlistMessage0: SEVERITY_ERROR: SeedlistMessage ID: [] Resource Bundle: [] SeedlistMessage Text: [EJQHE0026E: A crawler tried to send a second request to fetch remaining WCM contents for a site area ([Ljava.lang.String;@....). Unfortunately there was no cache key, which could mean that the crawler has been stopped manually before or there might have been an unexpected exception. As this is not a valid scenario. you need to re-crawl your site.] This timeout or error only occurs when the crawler is directed through the load balancers and the IBM HTTP Server (IHS). We have routed around IHS and the crawler works fine. Why is this 500 error happening when directed through IHS and how can this issue be resolved?

[{"Product":{"code":"SS5RWK","label":"Content Analytics with Enterprise Search"},"Business Unit":{"code":"BU053","label":"Cloud \u0026 Data Platform"},"Component":"--","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF016","label":"Linux"},{"code":"PF033","label":"Windows"}],"Version":"3.5","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}},{"Product":{"code":"SS8NLW","label":"IBM Watson Explorer"},"Business Unit":{"code":"BU048","label":"IBM Software"},"Component":" ","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF016","label":"Linux"},{"code":"PF033","label":"Windows"}],"Version":"10.0.0;11.0.0","Edition":"Advanced","Line of Business":{"code":"LOB76","label":"Data Platform"}}]

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Document Information

Modified date:
12 July 2019

UID

swg21978002