Troubleshooting issues with stop words
You can use regular expressions to define stop word patterns, which include a combination of words and sentences. The algorithm refers to the regular expressions to remove or extract words and sentences based on your preference while clustering in the Real-time incident correlation and Proactive problem management dashboards.
After uploading a stop word file, you might face specific issues in the Real-time incident correlation and Proactive problem management clusters. Use the information in this topic to understand and resolve such issues.
Issue symptom
You see no changes in the existing clusters even after implementing stop words in the Real-time incident correlation dashboard.
Resolution
- Make sure you have uploaded the stop word file.
- Validate the regular expression in the stop word file, and upload it again. If no words or word patterns mentioned in the stop word file match the incident details, the entire incident details is considered for clustering.
- Validate the syntax of the YAML stop word file.
For more details, see Configuring incident correlation to detect similar incident clusters.
Issue symptom
You do not see any clusters in the Proactive problem management dashboard.
Issue scope
One or more problem coordinators face this issue.
Resolution
Chances are, your stop word pattern has removed every incident details for clustering. Verify the stop word pattern and make changes in it accordingly.
For more details, see Configuring proactive problem management settings, Configuring one-time job settings for proactive problem management, and Configuring Proactive problem management settings for recurring jobs.
Issue symptom
You see the following error message
ADE-CIB-INT-500-560: Error formatting stopwords file = Error parsing YAML: while parsing a block mapping in "<unicode string>", line 3, column 1
Issue scope
One or more problem coordinators face this issue.
Resolution
Validate the stop word file for YAML formatting or indentation errors. Use a YAML validator to validate your stop word file, and re-upload it. For more details, see Configuring proactive problem management settings, and Configuring one-time job settings for proactive problem management, Configuring Proactive problem management settings for recurring jobs.