a8526d45e9
[ #373 ] blobovnizca: Add missed/fix tracing spans
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-06-21 15:13:26 +03:00
028d4a8058
[ #373 ] blobovnicza: Add metrics
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-06-21 15:13:26 +03:00
01a0c97760
[ #453 ] engine: Set Disabled mode to deleted shard
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-06-20 12:04:07 +03:00
69df0d21c2
[ #446 ] engine: Move to read-only on blobstor errors
...
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-06-16 14:53:32 +03:00
fe01781811
[ #446 ] los: Wrap SSD errors in a separate type
...
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-06-16 14:53:31 +03:00
20b84f183a
[ #446 ] engine: Simplify logs for shard mode change
...
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-06-16 14:51:29 +03:00
4449006862
[ #424 ] metrics: Use mode value as metric value for shard
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-06-14 18:26:19 +03:00
1b364d8cf4
[ #424 ] metrics: Refactor engine metrics
...
Use histogram vector to measure request duration.
Fix naming like in Prometheus best practice.
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-06-14 14:53:32 +03:00
85deb12f4d
[ #424 ] writecache: Drop metrics when close
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-06-14 14:52:40 +03:00
07f155ac77
[ #424 ] metrics: Use labels for writecache methods and operations
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-06-14 14:52:40 +03:00
2541d319de
[ #266 ] pilorama: Allow to get current tree height
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-06-13 10:00:45 +00:00
41ab4d070e
[ #423 ] *: Use hrw.StringHash() where possible
...
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-06-13 07:18:25 +00:00
263c6fdc50
[ #372 ] node: Add metrics for the error counter in the engine
...
Signed-off-by: Anton Nikiforov <an.nikiforov@yadro.com>
2023-06-07 13:04:47 +00:00
74578052f9
[ #412 ] node: Replace tracing package
...
Use observability module.
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-06-01 13:23:11 +00:00
dbf41391b5
[ #401 ] engine: Extend evacuation logs
...
Add operation-tag to logger.
Log evacuation results.
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-05-31 13:24:30 +03:00
3220c4df9f
[ #376 ] metrics: Add GC metrics
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-05-31 10:22:12 +00:00
faca861451
[ #411 ] Remove unnecessary pointers for sync objects
...
Signed-off-by: Alejandro Lopez <a.lopez@yadro.com>
2023-05-31 10:19:14 +00:00
8dcd06c587
[ #394 ] node: Use Context in Blobovniczas.Iterate()
...
Signed-off-by: Anton Nikiforov <an.nikiforov@yadro.com>
2023-05-31 10:09:18 +00:00
365a7ca0f4
[ #366 ] node: Stop GC once termination signal received
...
Signed-off-by: Anton Nikiforov <an.nikiforov@yadro.com>
2023-05-29 09:35:08 +03:00
802168c0c6
[ #364 ] node: Stop flushing big object when termination signal received
...
Signed-off-by: Anton Nikiforov <an.nikiforov@yadro.com>
2023-05-26 16:46:58 +03:00
271a56c2ab
[ #395 ] metrics: Drop redundant metrics
...
HistogramVec already has labeled counter.
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-05-26 13:39:37 +00:00
f2e5dead7e
[ #398 ] pilorama: Disallow applying same operations
...
1. In redo() we save the old state.
2. If we do redo() for the same operation twice, the old state will be
overritten with the new one.
3. This in turn affects undo() and subsequent isAncestor() check.
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-05-26 12:14:29 +00:00
20a489bdb5
[ #393 ] gc: Use defer to mark handler done
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-05-26 12:14:02 +00:00
2613351008
[ #387 ] gc: Cancel GC is change mode requested
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-05-25 09:38:16 +03:00
2ce43935f9
[ #312 ] metrics: Add writecache metrcis
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-05-24 10:18:39 +00:00
d212d908b5
[ #312 ] wc: Add metrics
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-05-24 10:18:39 +00:00
4503a61997
[ #312 ] wc: Delete unused Iterate method
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-05-24 10:18:39 +00:00
4b768fd115
[ #381 ] *: Move to sync/atomic
...
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-05-23 08:18:01 +03:00
ff570847a4
[ #381 ] go.mod: Update bbolt
...
Adopt new `ForEachBucket` function where possible.
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-05-22 11:49:14 +03:00
35c9b6b26d
[ #314 ] writecache: remove objects right after they are flushed
...
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-05-19 09:37:05 +00:00
Pavel Karpy
bf79d06f03
[ #314 ] writecache: Do not lose small objects on disk errors
...
Do return error if an object could not been stored on WC's disk.
Signed-off-by: Pavel Karpy <p.karpy@yadro.com>
2023-05-19 09:37:05 +00:00
Pavel Karpy
9e56592be3
[ #314 ] writecache: Simplify background workers naming
...
Also, drop not used arg.
Signed-off-by: Pavel Karpy <p.karpy@yadro.com>
2023-05-19 09:37:05 +00:00
e4889e06ba
[ #329 ] node: Make evacuate async
...
Now it's possible to run evacuate shard in async.
Also only one evacuate process can be in progress.
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-05-19 08:43:52 +00:00
869fcbf591
[ #332 ] gc: Fix expired complex object deletion
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-05-16 12:44:57 +00:00
ab07bad33d
[ #332 ] gc: Add complex object unit test
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-05-16 12:44:57 +00:00
c62025c836
[ #321 ] metabase/test: execute tests in parallel
...
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-05-12 09:45:03 +00:00
945454f60c
[ #321 ] engine/test: Execute tests in parallel
...
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-05-12 09:45:03 +00:00
4578d00619
[ #321 ] shard/test: Execute tests in parallel
...
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-05-12 09:45:03 +00:00
d35e4c389f
[ #321 ] shard/test: Parallelize TestWriteCacheObjectLoss
...
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-05-12 09:45:03 +00:00
969bfb603f
[ #321 ] shard/test: Parallelize TestShard_List
...
```
go test -count=1 -run TestShard_List -race .
Before: 2.492s
After: 0.109s
```
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-05-12 09:45:03 +00:00
a181c9e434
[ #332 ] gc: Add additional logging
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-05-10 17:34:40 +03:00
973af12854
[ #327 ] tests: replace os.MkdirTemp with t.TempDir
...
Signed-off-by: Alejandro Lopez <a.lopez@yadro.com>
2023-05-05 11:24:51 +00:00
a1b4ba9980
[ #209 ] compression: Do not store uncompressible data
...
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-05-03 16:28:29 +03:00
eca5c210dd
[ #299 ] evacuate: Add context cancel checks
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-05-02 15:55:30 +03:00
a9c4ba62c3
[ #248 ] metabase: Remove storage group bucket
...
Backwards compatible change, so no version increase.
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-04-28 17:00:43 +03:00
58f1ba4b51
[ #288 ] pilorama: Add missing operation in log
...
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-04-28 07:56:20 +00:00
daa26f6e9b
[ #288 ] pilorama/test: Check operation order for TreeGetByPath()
...
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-04-28 07:56:20 +00:00
291f9e809a
[ #288 ] pilorama: Remove getMeta() wrapper
...
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-04-28 07:56:20 +00:00
0045f1bcd4
[ #288 ] pilorama: Use more descriptive names for memory tree
...
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-04-28 07:56:20 +00:00
f856ad7480
[ #288 ] pilorama: Remove childMap from memory forest
...
Memory forest is here to check the correctness of boltdb optimized
implementation. Let's keep it simple.
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-04-28 07:56:20 +00:00
ada081dfd5
[ #19 ] node: Make policier read shards concurrently
...
* Introduce ListWithMultiCursor that simultaneously reads objects
from different shards
Signed-off-by: Airat Arifullin a.arifullin@yadro.com
2023-04-27 11:11:47 +03:00
1f4061c0e2
[ #285 ] blobonicza: Optimize upperPowerOfTwo()
...
The real reason is this:
```
pkg/local_object_storage/blobovnicza/sizes.go:36:69
revive empty-block: this block is empty, you can remove it
```
Didn't want to make this function longer or to add `nolint`, thus this
change. To justify:
```
UpperBound/size=1-8 0.4924n ± 1% 0.2472n ± 2% -49.80% (p=0.000 n=10)
UpperBound/size=1023-8 0.4936n ± 3% 0.2442n ± 1% -50.52% (p=0.000 n=10)
UpperBound/size=66560-8 0.8201n ± 2% 0.2436n ± 1% -70.29% (p=0.000 n=10)
UpperBound/size=41943040-8 6.6900n ± 5% 0.2432n ± 0% -96.36% (p=0.000 n=10)
geomean 1.075n 0.2446n -77.24%
```
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-04-26 17:35:11 +03:00
f07e2d4812
[ #285 ] lint: Fix revive/unused-parameter
...
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-04-26 17:35:04 +03:00
Pavel Karpy
09938a9841
Revert "[ #262 ] meta: Do not return old expired objects"
...
This reverts commit 3d23b087
2023-04-20 19:22:55 +03:00
Pavel Karpy
e9461686b8
[ #274 ] wc: Resolve possible deadlock
...
If operation with WC are _fast enough_ (e.g. `Init` failed and `Close` is
called immediately) there is a race and a deadlock that do not allow finish
(and start, in fact) an initialization routine because of taken `modeMtx`
and also do not allow finish `Close` call because of awaiting initialization
finish. So do stop initialization _before_ any mutex is taken.
Signed-off-by: Pavel Karpy <p.karpy@yadro.com>
2023-04-20 19:22:54 +03:00
Pavel Karpy
6b6f33ed71
[ #274 ] wc: Make wait groups work more explicit
...
Do not run routine that calls `wg.Done()` inside, it is hard to read.
Signed-off-by: Pavel Karpy <p.karpy@yadro.com>
2023-04-20 19:22:54 +03:00
6c90bb87f1
[ #118 ] node: add ctx for unit tests for blobstor
...
Signed-off-by: Airat Arifullin a.arifullin@yadro.com
2023-04-19 18:09:33 +03:00
Pavel Karpy
3d23b08773
[ #262 ] meta: Do not return old expired objects
...
Signed-off-by: Pavel Karpy <p.karpy@yadro.com>
2023-04-19 13:37:38 +00:00
13c8afcb02
[ #118 ] node: add unit concurrent tests for blobstor
...
Signed-off-by: Airat Arifullin a.arifullin@yadro.com
2023-04-19 10:22:50 +00:00
Pavel Karpy
20cd080323
[ #255 ] write-cache: Fix init race condition
...
Do not use WC's internals in the initialization routines without mode
protection. WC should be able to change its mode even if the initialization
is not finished yet.
Signed-off-by: Pavel Karpy <p.karpy@yadro.com>
2023-04-19 09:29:07 +00:00
Pavel Karpy
262c9c2b93
[ #256 ] blobovniczaTree: Make Exists test stable
...
Corrupt and request _the same_ file.
Signed-off-by: Pavel Karpy <p.karpy@yadro.com>
2023-04-14 16:46:24 +03:00
8466894fdf
[ #250 ] control: remove DumpShard and RestoreShard RPC
...
We have `Evacuate` with a cleaner interface.
Also, remove them from CLI and engine.
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-04-14 12:28:49 +00:00
6121b541b5
[ #242 ] treesvc: Add tracing spans
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-04-14 10:25:53 +00:00
d62c6e4ce6
[ #242 ] node: Add tracing spans
...
Add tracing spans for PUT requests.
Add tracing spans for DELETE requests.
Add tracing spans for SELECT requests.
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-04-14 10:25:53 +00:00
41eb3129ae
[ #139 ] Refactor blobovnicza exist test to not use chmod
...
Signed-off-by: Alejandro Lopez <a.lopez@yadro.com>
2023-04-14 12:16:14 +03:00
0e31c12e63
[ #240 ] logs: Move log messages to constants
...
Drop duplicate entities.
Format entities.
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-04-14 05:06:09 +00:00
5d2affa5cd
testutil: Fix linter warning
...
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-04-12 11:00:02 +03:00
0920d848d0
[ #135 ] get-object: Add tracing spans
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-04-12 06:52:00 +00:00
c4865783fc
[ #236 ] blobstor/test: Prefill storage in parallel in read benchmark
...
`blobovniczatree` takes a really long time to prefill, because each
batch takes at least 10ms, so for 10k iterations we have at least 100s of
prefill.
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-04-11 20:52:11 +03:00
6ad5c38225
[ #236 ] testutil: Use random object id in RandObjGenerator
...
Before this commit it was like this:
```
BenchmarkSubstorageWritePerf/memstore-rand10-8 227425 4859 ns/op
BenchmarkSubstorageWritePerf/fstree_nosync-rand10-8 --- FAIL: BenchmarkSubstorageWritePerf/fstree_nosync-rand10-8
perf_test.go:165: writing entry: file exists
perf_test.go:165: writing entry: file exists
perf_test.go:165: writing entry: file exists
BenchmarkSubstorageWritePerf/fstree-rand10-8 --- FAIL: BenchmarkSubstorageWritePerf/fstree-rand10-8
perf_test.go:165: writing entry: file exists
perf_test.go:165: writing entry: file exists
perf_test.go:165: writing entry: file exists
```
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-04-11 20:52:04 +03:00
c85a0bc866
[ #236 ] blobstor/test: Reduce test descriptions
...
I tried to add 4 more tests and suddenly, it became harder to navigate in
code. Move directory creation in a common function.
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-04-11 20:52:04 +03:00
dbc3811ff4
[ #191 ] engine: Allow to remove redundant object copies
...
RemoveDuplicates() removes all duplicate object copies stored on
multiple shards. All shards are processed and the command tries to leave
a copy on the best shard according to HRW.
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-04-07 17:25:50 +00:00
cb172e73a6
[ #228 ] node: Use uber atomic package instead standard
...
Signed-off-by: Airat Arifullin a.arifullin@yadro.com
2023-04-07 15:37:27 +00:00
f32f61df87
[ #203 ] pilorama: Refactor tests
...
Do not pass 0 as channel capacity.
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-04-06 16:33:36 +03:00
8908798f59
[ #203 ] node: Resolve unused vars
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-04-06 16:33:36 +03:00
bab11492ad
[ #203 ] node: Resolve never used errors
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-04-06 16:33:36 +03:00
9e2df4b7c7
[ #203 ] node: Fix double imports
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-04-06 16:33:36 +03:00
ab891517de
[ #116 ] node: Fix bug with extra generated files in TestReload
...
* Create testNewEngine in engineWithShards without default opts
Signed-off-by: Airat Arifullin a.arifullin@yadro.com
2023-04-05 18:49:34 +03:00
6f7b6a8813
[ #116 ] node: Improve shard/engine construction in tests
...
* Introduce testEngineWrapper that can be constructed with different options
Signed-off-by: Airat Arifullin a.arifullin@yadro.com
2023-04-05 14:36:40 +00:00
23575e1ac0
[ #210 ] policier: Resolve contextcheck linter
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-04-05 14:55:52 +03:00
9098d0eec0
[ #211 ] engine: Unify shard mode checks for tree operations
...
All operations must ensure the shard is not in a degraded mode.
Write operations must also ensure the shard is not in a read-only mode.
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-04-05 11:10:39 +00:00
760af6b912
[ #211 ] fstree: Consider ENOSPC a logical error
...
We already do this for file writing, however directory creation can also
fail.
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
2023-04-05 11:10:39 +00:00
1f1aed87be
[ #188 ] metabase: Refactor object inhume
...
Resolve funlen linter for db.Inhume method
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-04-04 14:50:43 +03:00
5a66db80c5
[ #188 ] engine: Refactor shard evacuation
...
Resolve funlen and gocognit linter for StorageEngine.Evacuate method
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-04-04 14:50:43 +03:00
456bc097f7
[ #188 ] engine: Refactor get range from engine
...
Resolve funlen linter for StorageEngine.getRange method
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-04-04 14:50:43 +03:00
3010ca2649
[ #188 ] engine: Refactor get object from engine
...
Resolve funlen linter for StorageEngine.get method
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-04-04 14:50:43 +03:00
0739c36a3b
[ #188 ] metabase: Refactor object put to metabase
...
Resolve funlen linter for db.put method
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-04-04 14:50:43 +03:00
8273a3dfb2
[ #188 ] blobstor: Refactor blobstor test
...
Resolve funlen linter for TestIterate function
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-04-04 14:50:43 +03:00
594b5821ed
[ #188 ] blobstor: Refactor put data to blobovniczas
...
Resolve funlen linter for Blobovniczas.Put method
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-04-04 14:50:43 +03:00
8e5a0dcf27
[ #204 ] gc: Fix GC handlers start
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-04-04 06:48:27 +00:00
a7c79c773a
[ #168 ] node: Refactor node config
...
Resolve containedctx linter for cfg
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-03-31 09:32:59 +03:00
7be5a0fd79
[ #189 ] node: Fix bug with sync/atomic package
...
Signed-off-by: Airat Arifullin <a.arifullin@yadro.com>
2023-03-30 14:50:43 +00:00
ab32067152
[ #183 ] gc: Fix drop expired locked complex objects
...
Do not delete bucket keys during iteration
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-03-30 15:33:42 +03:00
9f0bce5c15
[ #183 ] gc: Fix drop expired locked simple objects
...
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
2023-03-30 15:33:42 +03:00
341fe1688f
[ #139 ] test: Add test storage implementation
...
This aims to reduce the usage of chmod hackery to induce or simulate
OS-related failures.
Signed-off-by: Alejandro Lopez <a.lopez@yadro.com>
2023-03-29 14:28:49 +00:00
Pavel Karpy
97e201993b
[ #184 ] *: Unify done contexts handling
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If `ctx.Done()`, return `ctx.Err()` in every function that returns an error.
Signed-off-by: Pavel Karpy <p.karpy@yadro.com>
2023-03-29 10:34:54 +00:00
221203beeb
[ #180 ] node: Refactor panics in unit test
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* Replace panics in unit tests by require.NoError and t.Fatalf
Signed-off-by: Airat Arifullin <a.arifullin@yadro.com>
2023-03-29 12:39:07 +03:00
aarifullin
34329d67ff
[ #86 ] node: Fix unit test and linter errors
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Signed-off-by: Airat Arifullin <aarifullin@yadro.com>
2023-03-23 12:42:58 +03:00
9808dec591
[ #86 ] node: Move testing utils to one package
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Move testing utils from tests in local_object_storage package to
unified testutil package
Signed-off-by: Airat Arifullin <aarifullin@yadro.com>
2023-03-23 08:19:15 +00:00
342e571d89
[ #159 ] Add handle __SYSTEM__ sys attributes
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Signed-off-by: Denis Kirillov <d.kirillov@yadro.com>
2023-03-22 17:35:20 +03:00
