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## What changes were proposed in this pull request? When un-cache a table, we should not only remove the cache entry for this table, but also un-cache any other cached plans that refer to this table. This PR also includes some refactors: 1. use `java.util.LinkedList` to store the cache entries, so that it's safer to remove elements while iterating 2. rename `invalidateCache` to `recacheByPlan`, which is more obvious about what it does. ## How was this patch tested? new regression test Author: Wenchen Fan <wenchen@databricks.com> Closes #17097 from cloud-fan/cache. |
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