Jay Kreps created KAFKA-566:
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Summary: Add last modified time to the TopicMetadataRequest
Key: KAFKA-566
URL: https://issues.apache.org/jira/browse/KAFKA-566
Project: Kafka
Issue Type: Bug
Affects Versions: 0.8
Reporter: Jay Kreps
Priority: Blocker
Fix For: 0.8
To support KAFKA-560 it would be nice to have a last modified time in the
TopicMetadataRequest. This would be the timestamp of the last append to the log
as taken from stat on the final log segment.
Implementation would involve
1. Adding a new field to TopicMetadataRequest
2. Adding a method Log.lastModified: Long to get the last modified time from a
log
This timestamp would, of course, be subject to error in the event that the file
was touched without modification, but I think that is actually okay since it
provides a manual way to avoid gc'ing a topic that you know you will want.
It is debatable whether this should go in 0.8. It would be nice to add the
field to the metadata request, at least, as that change should be easy and
would avoid needing to bump the version in the future.
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