14200
82%
master: 87%

Ran 12 Oct 2018 08:58AM UTC

Jobs 1

Files 304

Run time 22s

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Build # 14200

Build Type

push

travis-ci

Committed by

locker

Commit Message

wal: delete old wal files when running out of disk space

Now if the WAL thread fails to preallocate disk space needed to commit
a transaction, it will delete old WAL files until it succeeds or it
deletes all files that are not needed for local recovery from the oldest
checkpoint. After it deletes a file, it notifies the garbage collector
via the WAL watcher interface. The latter then deactivates consumers
that would need deleted files.

The user doesn't see a ENOSPC error if the WAL thread successfully
allocates disk space after deleting old files. Here's what's printed
to the log when this happens:

  wal/101/main C> ran out of disk space, try to delete old WAL files
  wal/101/main I> removed /home/vlad/src/tarantool/test/var/001_replication/master/00000000000000000005.xlog
  wal/101/main I> removed /home/vlad/src/tarantool/test/var/001_replication/master/00000000000000000006.xlog
  wal/101/main I> removed /home/vlad/src/tarantool/test/var/001_replication/master/00000000000000000007.xlog
  main/105/main C> deactivated WAL consumer replica 82d0fa3f-6881-4bc5-a2c0-a0f5dcf80120 at {1: 5}
  main/105/main C> deactivated WAL consumer replica 98dce0a8-1213-4824-b31e-c7e3c4eaf437 at {1: 7}

Closes #3397

Run Details

40881 of 49813 relevant lines covered (82.07%)

885685.93 hits per line

Jobs

ID	Job ID	Ran	Files	Coverage
3	14200.3 (TARGET=coverage)	12 Oct 2018 08:58AM UTC	304	82.07	Travis Job 14200.3

tarantool / tarantool / 14200
82%
master: 87%

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