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Posted to jira@kafka.apache.org by "Jun Rao (JIRA)" <ji...@apache.org> on 2017/11/08 00:21:00 UTC
[jira] [Created] (KAFKA-6184) report a metric of the lag between
the consumer offset and the start offset of the log
Jun Rao created KAFKA-6184:
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Summary: report a metric of the lag between the consumer offset and the start offset of the log
Key: KAFKA-6184
URL: https://issues.apache.org/jira/browse/KAFKA-6184
Project: Kafka
Issue Type: Improvement
Affects Versions: 1.0.0
Reporter: Jun Rao
Currently, the consumer reports a metric of the lag between the high watermark of a log and the consumer offset. It will be useful to report a similar lag metric between the consumer offset and the start offset of the log. If this latter lag gets close to 0, it's an indication that the consumer may lose data soon.
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