Backport to 2.18.x: #7656: Remove limitation of compression policy for continuous aggregates #7660
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Before compressed chunks were mutable, adding a compression policy to a continuous aggregate that could include portions of the refrsh window were blocked. When a continuous aggregate is refreshed, the underlying chunks needed to allow DELETEs and INSERTs, so they could not be compressed. Now, compressed chunks allow both operations and there is no longer a need to prevent the refresh window and compression window from overlapping. (cherry picked from commit 30b47b8)
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This is an automated backport of #7656: Remove limitation of compression policy for continuous aggregates.
The original issue is #7021.
This PR will be merged automatically after all the relevant CI checks pass. If this fix should not be backported, or will be backported manually, just close this PR. You can use the backport branch to add your changes, it won't be modified automatically anymore.
For more details, please see the documentation
Original description
Remove limitation of compression policy for continuous aggregates
Before compressed chunks were mutable, adding a compression policy to a continuous aggregate that could include portions of the refrsh window were blocked. When a continuous aggregate is refreshed, the underlying chunks needed to allow DELETEs and INSERTs, so they could not be compressed. Now, compressed chunks allow both operations and there is no longer a need to prevent the refresh window and compression window from overlapping.
Closes#7021