Fixes the potential missed data during termination of Kafka engine table#11048
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alexey-milovidov merged 3 commits intoClickHouse:masterfrom May 22, 2020
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azat
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May 19, 2020
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| cancel = threading.Event() | ||
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| i = [2] |
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I guess a comment why this should be a list will be useful (I guess to allow changing it from the inner function)
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Yes. But i was just copy & paste that from the tests around :)
azat
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May 19, 2020
| time.sleep(12) | ||
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| instance.query(''' | ||
| DROP TABLE test.kafka; |
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and this triggers the issue, is my understanding correct?
alexey-milovidov
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May 22, 2020
nikitamikhaylov
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May 23, 2020
…during_drop Fixes the potential missed data during termination of Kafka engine table (cherry picked from commit b82c633)
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May 23, 2020
* Merge pull request #10910 from filimonov/kafka_drop_hang_fix Fix for the hang during deletion of engine=Kafka (cherry picked from commit 0fd0711) * Merge pull request #10986 from ClickHouse/try-fix-use-after-free-mergetree Try to fix use-after-free error in MergeTree (cherry picked from commit 073dc2e) * Merge pull request #11048 from filimonov/kafka_missed_data_during_drop Fixes the potential missed data during termination of Kafka engine table (cherry picked from commit b82c633) * Merge pull request #11109 from ClickHouse/less_verbose_logging Less verbose logging in mutation finalization task (cherry picked from commit 1906762) * Merge pull request #11074 from Jokser/memory-leak-in-register-disk-s3 Fix memory leak in registerDiskS3 (cherry picked from commit 4a237fa) * Merge pull request #11038 from Enmk/parseDateTime64BestEffort_fix Fixed parseDateTime64BestEffort implementation (cherry picked from commit 5a0f356) Co-authored-by: alexey-milovidov <[email protected]> Co-authored-by: alesapin <[email protected]> Co-authored-by: Vitaly Baranov <[email protected]>
filimonov
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Jun 8, 2020
…during_drop Fixes the potential missed data during termination of Kafka engine table (cherry picked from commit b82c633)
filimonov
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Jun 8, 2020
…during_drop Fixes the potential missed data during termination of Kafka engine table (cherry picked from commit b82c633)
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Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):
Fixes the potential missed data during termination of Kafka engine table
Detailed description / Documentation draft:
During termination of the table, it was possible to stop reading in the middle of the polled batch but commit the whole batch. After continuing consumption it would lead to skipped messages.
Now after termination start we return don't store / commit the offset.
Closes #11034
/cc @azat