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https://issues.apache.org/jira/browse/FLINK-19432?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17202984#comment-17202984
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Benchao Li commented on FLINK-19432:
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[~tinny] IMHO, this may introduce some overhead in the format. If it does not
have critical impact I prefer to keep as it is.
CC [~jark], WDYT?
> Whether to capture the updates which don't change any monitored columns
> -----------------------------------------------------------------------
>
> Key: FLINK-19432
> URL: https://issues.apache.org/jira/browse/FLINK-19432
> Project: Flink
> Issue Type: Improvement
> Components: Formats (JSON, Avro, Parquet, ORC, SequenceFile)
> Affects Versions: 1.11.1
> Reporter: Zhengchao Shi
> Priority: Major
> Fix For: 1.12.0
>
>
> with `debezium-json` and `canal-json`:
> Whether to capture the updates which don't change any monitored columns. This
> may happen if the monitored columns (columns defined in Flink SQL DDL) is a
> subset of the columns in database table. We can provide an optional option，
> default 'true', which means all the updates will be captured. You can set to
> 'false' to only capture changed updates
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