Run newShardSnapshotTask
tasks concurrently
#126478
Merged
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In #88707 we changed the behaviour here to run the shard-snapshot
initialization tasks all in sequence. Yet these tasks do nontrivial work
since they may flush to acquire the relevant index commit, so with this
commit we go back to distributing them across the
SNAPSHOT
pool again.Backport of #126452 to
8.x