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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2021/01/19 04:14:11 UTC
[GitHub] [flink] fsk119 opened a new pull request #14689: [FLINK-20500][upsert-kafka] Fix temporal join test
fsk119 opened a new pull request #14689:
URL: https://github.com/apache/flink/pull/14689
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## What is the purpose of the change
*The reason why the test fails is the records in the same partition are out-of-order. I print the partition-id and offset in the partition.*
```
partition-0
<102,Greg,Berlin,BERLIN,2020-08-15T00:00:03,0,0>
<103,Richard,Berlin,BERLIN,2020-08-16T00:01:05,0,1>
<103,Richard,London,LONDON,2020-08-16T01:01:05,0,2>
<105,Tim,Shenzhen,SHENZHEN,2020-08-16T00:06,0,3>
<105,Tim,Hongkong,HONGKONG,2020-08-16T01:06,0,4>
partition-1
<100,Bob,Beijing,BEIJING,2020-08-15T00:00:01,1,0>
<101,Alice,Shanghai,SHANGHAI,2020-08-15T00:00:02,1,1>
<101,Alice,Wuhan,WUHAN,2020-08-16T00:02,1,2>
<101,Alice,Hangzhou,HANGZHOU,2020-08-16T01:04:05,1,3>
<104,Tomato,Hongkong,HONGKONG,2020-08-16T00:05:05,1,4>
<104,Tomato,Shenzhen,SHENZHEN,2020-08-16T01:05:05,1,5>
```
In the test, the expected record is `<10004,104,2020-08-16T00:05:06,Tomato,HONGKONG,2020-08-16T00:05:05>
` but the actual record is `<10004,104,2020-08-16T00:05:06,null,null,null>`.
It may be the left stream record `<10004,104,2020-08-16T00:05:06>` arrives before the record `<104,Tomato,Hongkong,HONGKONG,2020-08-16T00:05:05,1,4>
` in the right stream. When the left stream arrives, it finds the watermark is at timestamp `2020-08-16T01:04:05` in the right stream, which means the records before `2020-08-16T01:04:05` have arrived and emits itself.
Therefore, we should adjust the order in the partition or watermark strategy. Here we just adjust order for convenience. The new order in the partition follows.
```
<102,Greg,Berlin,BERLIN,2020-08-15T00:00:03,0,0>
<103,Richard,Berlin,BERLIN,2020-08-16T00:01:05,0,1>
<105,Tim,Shenzhen,SHENZHEN,2020-08-16T00:06,0,2>
<103,Richard,London,LONDON,2020-08-16T01:01:05,0,3>
<105,Tim,Hongkong,HONGKONG,2020-08-16T01:06,0,4>
<100,Bob,Beijing,BEIJING,2020-08-15T00:00:01,1,0>
<101,Alice,Shanghai,SHANGHAI,2020-08-15T00:00:02,1,1>
<101,Alice,Wuhan,WUHAN,2020-08-16T00:02,1,2>
<104,Tomato,Hongkong,HONGKONG,2020-08-16T00:05:05,1,3>
<101,Alice,Hangzhou,HANGZHOU,2020-08-16T01:04:05,1,4>
<104,Tomato,Shenzhen,SHENZHEN,2020-08-16T01:05:05,1,5>
```
## Brief change log
- *Reorder the records in the partition*
## Documentation
- Does this pull request introduce a new feature? (yes / **no**)
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[GitHub] [flink] flinkbot edited a comment on pull request #14689: [FLINK-20500][upsert-kafka] Fix temporal join test
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #14689:
URL: https://github.com/apache/flink/pull/14689#issuecomment-762595621
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## CI report:
* 7421043232e94c67d4e44020b8a5a319a3e95a09 Azure: [PENDING](https://dev.azure.com/apache-flink/98463496-1af2-4620-8eab-a2ecc1a2e6fe/_build/results?buildId=12213)
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[GitHub] [flink] flinkbot edited a comment on pull request #14689: [FLINK-20500][upsert-kafka] Fix temporal join test
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #14689:
URL: https://github.com/apache/flink/pull/14689#issuecomment-762595621
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## CI report:
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[GitHub] [flink] flinkbot commented on pull request #14689: [FLINK-20500][upsert-kafka] Fix temporal join test
Posted by GitBox <gi...@apache.org>.
flinkbot commented on pull request #14689:
URL: https://github.com/apache/flink/pull/14689#issuecomment-762590774
Thanks a lot for your contribution to the Apache Flink project. I'm the @flinkbot. I help the community
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## Automated Checks
Last check on commit 7421043232e94c67d4e44020b8a5a319a3e95a09 (Tue Jan 19 04:15:57 UTC 2021)
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[GitHub] [flink] flinkbot commented on pull request #14689: [FLINK-20500][upsert-kafka] Fix temporal join test
Posted by GitBox <gi...@apache.org>.
flinkbot commented on pull request #14689:
URL: https://github.com/apache/flink/pull/14689#issuecomment-762595621
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[GitHub] [flink] flinkbot edited a comment on pull request #14689: [FLINK-20500][upsert-kafka] Fix temporal join test
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #14689:
URL: https://github.com/apache/flink/pull/14689#issuecomment-762595621
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## CI report:
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[GitHub] [flink] flinkbot edited a comment on pull request #14689: [FLINK-20500][upsert-kafka] Fix temporal join test
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #14689:
URL: https://github.com/apache/flink/pull/14689#issuecomment-762595621
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## CI report:
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[GitHub] [flink] flinkbot edited a comment on pull request #14689: [FLINK-20500][upsert-kafka] Fix temporal join test
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URL: https://github.com/apache/flink/pull/14689#issuecomment-762590774
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[GitHub] [flink] flinkbot edited a comment on pull request #14689: [FLINK-20500][upsert-kafka] Fix temporal join test
Posted by GitBox <gi...@apache.org>.
flinkbot edited a comment on pull request #14689:
URL: https://github.com/apache/flink/pull/14689#issuecomment-762595621
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[GitHub] [flink] wuchong merged pull request #14689: [FLINK-20500][upsert-kafka] Fix temporal join test
Posted by GitBox <gi...@apache.org>.
wuchong merged pull request #14689:
URL: https://github.com/apache/flink/pull/14689
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