release-21.1: sql: lease acquisition of OFFLINE descs may starve bulk operations #63558
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Fixes: cockroachdb#61798 Previously, offline descriptors would never have their leases cached and they would be released once the reference count hit zero. This was inadequate because when attempting to online these tables again the lease acquisition could be pushed back by other operations, leading to starvation / live locks. To address this, this patch will allow the leases of offline descriptors to be cached. Release note (bug fix): Lease acquisitions of descriptor in a offline state may starve out bulk operations (backup / restore)
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Backport 1/1 commits from #62959.
/cc @cockroachdb/release
Fixes: #61798
Previously, offline descriptors would never have their leases
cached and they would be released once the reference count hit zero.
This was inadequate because when attempting to online these tables
again the lease acquisition could be pushed back by other operations,
leading to starvation / live locks. To address this, this patch will
allow the leases of offline descriptors to be cached.
Release note (bug fix): Lease acquisitions of descriptor in a
offline state may starve out bulk operations (backup / restore)