Comments (3)
@jordansissel The problem is in the inner loop in match_against_groks. The outer loop in method filter retains the state of 'matched' just fine, but the inner loop overwrites 'matched' for each pattern (because it is also using it to store the set of matches), so tag_on_failure only applies to the last pattern. Consider this:
input { generator { count => 1 lines => [ '{"foo": "DEBUG"}', '{"bar": "DEBUG"}'] } }
filter {
json { source => "message" }
grok {
break_on_match => false
match => {
"foo" => [ "INFO", "DEBUG" ]
"bar" => [ "DEBUG", "INFO" ]
}
}
}
output { stdout { } }
The second event gets a _grokparsefailure tag, but the first does not. Unexpected.
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Based on what you've provided, I agree this is a bug.
from logstash-filter-grok.
+1 Even in v3.2.3 I experiencing this.
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Related Issues (20)
- Memory leak on 5.x
- Ability to auto-sort match options by frequency of match HOT 1
- getting values as an array HOT 1
- remove_field not working HOT 2
- "Prefix" functionality for grok HOT 4
- Track number of failed matches when using multiple pattern per field
- Warn when patterns don't have anchors HOT 1
- Significant Performance Regression using Jruby Timeouts HOT 8
- Implement ECS-Compatibility Mode HOT 4
- Logstash pipeline to remove passwords from log data HOT 1
- Using event fileds in configuration options HOT 1
- pure ruby regexp <capture:int> coercion does not work
- captures with same name won't coerce properly
- Logstash for iis SMTP
- Incoherent behavior of field references with overwrite
- [Test Failure] Syslog grok tests are failing on Logstash 8.x
- Behaviour when pattern writes to same input field (without "overwrite" option) HOT 1
- Add property to limit backtracking
- Regression on grok is case of match failure HOT 4
- Pipeline crashes with undefined method `each' for nil:NilClass error in event filter method
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