Troubleshooting
Problem
Watson Explorer Engine's search API call may hang and return no response. It depends on the contents of documents you crawled.
The issue was reported in the following condition (It may occur in other condition depending on the crawled data).
- Data source is web crawler, and
- In the admin's collection page, "snippet" is appended to the field list of "Output" (Configuration tab> Searching sub tab > Contents section)
Symptom
If the problem happens, the following symptoms can be seen.
- The engine-cmd command or a REST API call with the velocity CGI hangs and never returns any response. High CPU usage (almost 100%) of the velocity process can be observed during the hang-up.
- Application Builder's
rich preview
does not work. The spinner icon keeps spinning and does not show the preview result.
Environment
IBM Watson Explorer Foundational Components version 11.0.2.8 and V12.0.3.4 on Linux and Windows. (Earlier versions do not have this problem.)
Resolving The Problem
This issue is fixed in the interim Fix available in the Fix Central site (http://www.ibm.com/support/fixcentral/).
Version 11.0.2.8
Advanced Edition
- Fix ID: 11.0.2.8-WS-WatsonExplorer-AEFoundational-Linux-IF001 (Fix Central Link)
- Fix ID: 11.0.2.8-WS-WatsonExplorer-AEFoundational-Windows-IF001 (Fix Central Link)
Enterprise Edition
- Fix ID: 11.0.2.8-WS-WatsonExplorer-EEFoundational-Linux-IF001 (Fix Central Link)
- Fix ID: 11.0.2.8-WS-WatsonExplorer-EEFoundational-Windows-IF001 (Fix Central Link)
Version 12.0.3.4
- Fix ID: 12.0.3.4-WS-WatsonExplorer-DAEFoundational-Linux-IF001 (Fix Central Link)
- Fix ID: 12.0.3.4-WS-WatsonExplorer-DAEFoundational-Windows-IF001 (Fix Central Link)
Follow the procedures below to apply the fix.
For Linux
(Assume Engine's install directory is /opt/ibm/WEX/Engine/
. Replace it with appropriate path if needed.)
1. Download fix module from the link above and unzip it. Two fix module files (
libmisc.so
and libadmin.so)
are extracted.2. Stop Engine with the command below.
/opt/ibm/WEX/Engine/bin/engine-shutdown
3. Replace
libmisc.so
and libadmin.so
under /opt/ibm/WEX/Engine/lib/
with the fix module.4. Change owner of the fix modules
cd /opt/ibm/WEX/Engine/lib
chown apache:apache libmisc.so libadmin.so
5. Start Engine with the command below.
/opt/ibm/WEX/Engine/bin/engine-start
For Windows
(Assume Engine's install directory is C:\Program Files\IBM\WEX\Engine
. Replace it with appropriate path if needed.)
1. Download fix module from the link above and unzip it.
misc.dll
is extracted.2. Stop Engine with the command below.
C:\Program Files\IBM\WEX\Engine\bin\engine-shutdown.exe
3. Replace
misc.dll
under C:\Program Files\IBM\WEX\Engine\bin
and C:\Program Files\IBM\WEX\Engine\www\cgi-bin\
with the fix module.4. Start Engine with the command below.
C:\Program Files\IBM\WEX\Engine\bin\engine-start.exe
Document Location
Worldwide
[{"Line of Business":{"code":"LOB10","label":"Data and AI"},"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SS8NLW","label":"IBM Watson Explorer"},"ARM Category":[{"code":"a8m0z000000bpE3AAI","label":"technote"}],"ARM Case Number":"","Platform":[{"code":"PF016","label":"Linux"},{"code":"PF033","label":"Windows"}],"Version":"11.0.2;12.0.3"}]
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Document Information
Modified date:
10 December 2020
UID
ibm16375152