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Speed up drop database #6623

Merged
merged 1 commit into from
May 13, 2016
Merged

Speed up drop database #6623

merged 1 commit into from
May 13, 2016

Commits on May 13, 2016

  1. Speed up drop database 

    Drop database was closing and deleting each shard dir individually and
serially.  It would then delete the empty database dirs.

This changes drop database to close all shards in parallel and run
one os.RemoveAll to remove everything under the db dir which is more
efficient.

This also reworked the locking to avoid locking the tsdb.Store for
long periods of time.  That can cause queries and writes for other
databases to block as well.
    @jwilder
    jwilder committed May 13, 2016
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