The logger truncates log messages larger than 10k by printing the first ~3k bytes and last ~3k bytes and printing a "........" in the center. This limit seems arbitrary and would be useful if we could override it. We have customers submitting very large queries (huge $in: [] clauses for example) and although not ideal, the query contents are useful to us. The ellipses often break our query parser when doing log analysis.
It looks like a simple enough change - we would just need to switch maxLogLine from a const to some flag-driven value.
https://github.com/mongodb/mongo/blob/master/src/mongo/logger/message_event_utf8_encoder.cpp#L71
Mon Feb 23 21:39:07.519 [conn5324624] warning: log line attempted (19k) over max size (10k), printing beginning and end ... query
- is documented by
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DOCS-8981 Add flag to customize maxLogLine when logging large lines
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- Closed
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- Closed
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- is duplicated by
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SERVER-14339 Option to not truncate long log messages
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- Closed
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- is related to
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SERVER-30387 maxLogSizeKB parameter should only be positive
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- Closed
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- Closed
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