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cdc: Put schema change backfill support behind a changefeed option #31213

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mrtracy opened this issue Oct 10, 2018 · 1 comment
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cdc: Put schema change backfill support behind a changefeed option #31213

mrtracy opened this issue Oct 10, 2018 · 1 comment
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A-cdc Change Data Capture C-wishlist A wishlist feature. T-cdc
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@mrtracy
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mrtracy commented Oct 10, 2018 •
edited by cockroach-jira-scripts
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Issue #30902 introduced CHANGEFEED support for tables undergoing a schema change backfill. However, once the backfill is complete this will result in an entry being emitted for every row in the table, which may be an exceptional amount of data for a large table.

While we believe this to be the correct implementation, we may want to allow customers to return the previous behavior of stopping the changefeed when a backfill occurs. This would be accomplished by adding a changefeed option.

Jira issue: CRDB-4801
@mrtracy mrtracy added C-wishlist A wishlist feature. A-cdc Change Data Capture labels Oct 10, 2018
@mrtracy mrtracy added this to the Later milestone Oct 10, 2018
@ajwerner ajwerner mentioned this issue Jan 13, 2020
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@ajwerner ajwerner mentioned this issue Jan 23, 2020
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@mwang1026 mwang1026 changed the title cdc: Put backfill support behind a changefeed option cdc: Put schema change backfill support behind a changefeed option May 29, 2020
@miretskiy
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schema_change_policy option lets users control this.

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