After upgrading from 3.1 to 3.3.8 using the instructions found at:
I am not able to bring any logs up in the search window.
I have verified that I am receiving logs by looking at the input metrics, as well as the pipeline throughput.
However, /var/log/graylog-server/server.log contains the following errors:
2020-11-02T15:30:35.408-05:00 WARN [ProcessBufferProcessor] Unable to process message <430441f0-1d4a-11eb-861b-78e7d18dd4e6>: java.lang.ClassCastException: org.graylog.plugins.pipelineprocessor.ast.expressions.StringExpression cannot be cast to org.graylog.plugins.pipelineprocessor.ast.expressions.LogicalExpression
2020-11-02T15:30:35.411-05:00 WARN [ProcessBufferProcessor] Unable to process message <4304b720-1d4a-11eb-861b-78e7d18dd4e6>: java.lang.ClassCastException: org.graylog.plugins.pipelineprocessor.ast.expressions.StringExpression cannot be cast to org.graylog.plugins.pipelineprocessor.ast.expressions.LogicalExpression
2020-11-02T15:30:35.415-05:00 WARN [ProcessBufferProcessor] Unable to process message <43052c50-1d4a-11eb-861b-78e7d18dd4e6>: java.lang.ClassCastException: org.graylog.plugins.pipelineprocessor.ast.expressions.StringExpression cannot be cast to org.graylog.plugins.pipelineprocessor.ast.expressions.LogicalExpression
2020-11-02T15:30:35.417-05:00 WARN [ProcessBufferProcessor] Unable to process message <4305a181-1d4a-11eb-861b-78e7d18dd4e6>: java.lang.ClassCastException: org.graylog.plugins.pipelineprocessor.ast.expressions.StringExpression cannot be cast to org.graylog.plugins.pipelineprocessor.ast.expressions.LogicalExpression
2020-11-02T15:30:35.420-05:00 WARN [ProcessBufferProcessor] Unable to process message <430616b0-1d4a-11eb-861b-78e7d18dd4e6>: java.lang.ClassCastException: org.graylog.plugins.pipelineprocessor.ast.expressions.StringExpression cannot be cast to org.graylog.plugins.pipelineprocessor.ast.expressions.LogicalExpression
2020-11-02T15:30:35.421-05:00 WARN [ProcessBufferProcessor] Unable to process message <430664d0-1d4a-11eb-861b-78e7d18dd4e6>: java.lang.ClassCastException: org.graylog.plugins.pipelineprocessor.ast.expressions.StringExpression cannot be cast to org.graylog.plugins.pipelineprocessor.ast.expressions.LogicalExpression
2020-11-02T15:30:35.425-05:00 WARN [ProcessBufferProcessor] Unable to process message <4306da00-1d4a-11eb-861b-78e7d18dd4e6>: java.lang.ClassCastException: org.graylog.plugins.pipelineprocessor.ast.expressions.StringExpression cannot be cast to org.graylog.plugins.pipelineprocessor.ast.expressions.LogicalExpression
2020-11-02T15:30:35.428-05:00 WARN [ProcessBufferProcessor] Unable to process message <43074f30-1d4a-11eb-861b-78e7d18dd4e6>: java.lang.ClassCastException: org.graylog.plugins.pipelineprocessor.ast.expressions.StringExpression cannot be cast to org.graylog.plugins.pipelineprocessor.ast.expressions.LogicalExpression
2020-11-02T15:30:35.431-05:00 WARN [ProcessBufferProcessor] Unable to process message <4307c460-1d4a-11eb-861b-78e7d18dd4e6>: java.lang.ClassCastException: org.graylog.plugins.pipelineprocessor.ast.expressions.StringExpression cannot be cast to org.graylog.plugins.pipelineprocessor.ast.expressions.LogicalExpression
2020-11-02T15:30:35.434-05:00 WARN [ProcessBufferProcessor] Unable to process message <43083991-1d4a-11eb-861b-78e7d18dd4e6>: java.lang.ClassCastException: org.graylog.plugins.pipelineprocessor.ast.expressions.StringExpression cannot be cast to org.graylog.plugins.pipelineprocessor.ast.expressions.LogicalExpression
I’ve tried removing the pipeline rules, as well as disconnected the streams from the pipelines, but that did not resolve the issue.
Any suggestions on how to resolve would be appreciated.