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Posted to jira@kafka.apache.org by "fvaleri (via GitHub)" <gi...@apache.org> on 2025/08/04 07:47:08 UTC
[PR] KAFKA-19573: Update num.recovery.threads.per.data.dir configs [kafka]
fvaleri opened a new pull request, #20299:
URL: https://github.com/apache/kafka/pull/20299
The default value of `num.recovery.threads.per.data.dir` is now 2 according to KIP-1030. We should update config files which are still setting 1.
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Re: [PR] KAFKA-19573: Update num.recovery.threads.per.data.dir configs [kafka]
Posted by "fvaleri (via GitHub)" <gi...@apache.org>.
fvaleri commented on code in PR #20299:
URL: https://github.com/apache/kafka/pull/20299#discussion_r2250702049
##########
config/broker.properties:
##########
@@ -76,7 +76,7 @@ num.partitions=1
# The number of threads per data directory to be used for log recovery at startup and flushing at shutdown.
# This value is recommended to be increased for installations with data dirs located in RAID array.
Review Comment:
Agreed. Thanks.
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Re: [PR] KAFKA-19573: Update num.recovery.threads.per.data.dir configs [kafka]
Posted by "showuon (via GitHub)" <gi...@apache.org>.
showuon merged PR #20299:
URL: https://github.com/apache/kafka/pull/20299
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Re: [PR] KAFKA-19573: Update num.recovery.threads.per.data.dir configs [kafka]
Posted by "fvaleri (via GitHub)" <gi...@apache.org>.
fvaleri commented on PR #20299:
URL: https://github.com/apache/kafka/pull/20299#issuecomment-3149497851
@showuon fyi
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Re: [PR] KAFKA-19573: Update num.recovery.threads.per.data.dir configs [kafka]
Posted by "showuon (via GitHub)" <gi...@apache.org>.
showuon commented on code in PR #20299:
URL: https://github.com/apache/kafka/pull/20299#discussion_r2250695408
##########
config/broker.properties:
##########
@@ -76,7 +76,7 @@ num.partitions=1
# The number of threads per data directory to be used for log recovery at startup and flushing at shutdown.
# This value is recommended to be increased for installations with data dirs located in RAID array.
Review Comment:
I think the comment here is also good to be updated. Maybe:
`This value is recommended to be increased based on the installation resources.`?
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