Under high load we are limited by the _amount_ of keys we need to update
in a single transaction. In this commit we try storing all state
with a single key.
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
In the previous implementation any non-nil error that preceded object
fetching from blobstor led to iterating over every storage (in other words,
no storage ID information was taken into account). Now storage ID is
skipped only if metabase (storage ID source) returns any error.
Signed-off-by: Pavel Karpy <p.karpy@yadro.com>
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
It should be similar to a `TreeAddByPath`. `applyOperation` is used for
`Apply` when the operation can be inserted in the middle of a log.
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
Under load changing shard mode can lead to it being removed from the
list during some other PUT.
```
Dec 28 07:01:26 az neofs-node[364505]: panic: runtime error: invalid memory address or nil pointer dereference
Dec 28 07:01:26 az neofs-node[364505]: [signal SIGSEGV: segmentation violation code=0x1 addr=0x20 pc=0xc9fbb1]
Dec 28 07:01:26 az neofs-node[364505]: goroutine 11791912 [running]:
Dec 28 07:01:26 az neofs-node[364505]: github.com/nspcc-dev/neofs-node/pkg/local_object_storage/engine.(*StorageEngine).putToShard(0xc000435490, {0xc0003f7a28?, 0xc0001192c0?}, 0x2, {0x0, 0x>
Dec 28 07:01:26 az neofs-node[364505]: github.com/nspcc-dev/neofs-node/pkg/local_object_storage/engine/put.go:91 +0x1b1
Dec 28 07:01:26 az neofs-node[364505]: github.com/nspcc-dev/neofs-node/pkg/local_object_storage/engine.(*StorageEngine).put.func1(0xc000435490?, {0xc0003f7a28?, 0xc0001192c0?})
Dec 28 07:01:26 az neofs-node[364505]: github.com/nspcc-dev/neofs-node/pkg/local_object_storage/engine/put.go:71 +0x19c
Dec 28 07:01:26 az neofs-node[364505]: github.com/nspcc-dev/neofs-node/pkg/local_object_storage/engine.(*StorageEngine).iterateOverSortedShards(0x1?, {{0x62, 0x23, 0xfe, 0x60, 0x67, 0xd5, 0x>
Dec 28 07:01:26 az neofs-node[364505]: github.com/nspcc-dev/neofs-node/pkg/local_object_storage/engine/shards.go:225 +0xc8
Dec 28 07:01:26 az neofs-node[364505]: github.com/nspcc-dev/neofs-node/pkg/local_object_storage/engine.(*StorageEngine).put(0xc000435490, {0x1?})
Dec 28 07:01:26 az neofs-node[364505]: github.com/nspcc-dev/neofs-node/pkg/local_object_storage/engine/put.go:66 +0x2a9
Dec 28 07:01:26 az neofs-node[364505]: github.com/nspcc-dev/neofs-node/pkg/local_object_storage/engine.(*StorageEngine).Put.func1()
Dec 28 07:01:26 az neofs-node[364505]: github.com/nspcc-dev/neofs-node/pkg/local_object_storage/engine/put.go:43 +0x2a
Dec 28 07:01:26 az neofs-node[364505]: github.com/nspcc-dev/neofs-node/pkg/local_object_storage/engine.(*StorageEngine).execIfNotBlocked(0x8?, 0x38?)
Dec 28 07:01:26 az neofs-node[364505]: github.com/nspcc-dev/neofs-node/pkg/local_object_storage/engine/control.go:147 +0xcf
Dec 28 07:01:26 az neofs-node[364505]: github.com/nspcc-dev/neofs-node/pkg/local_object_storage/engine.(*StorageEngine).Put(0xc4df775a80?, {0x0?})
Dec 28 07:01:26 az neofs-node[364505]: github.com/nspcc-dev/neofs-node/pkg/local_object_storage/engine/put.go:42 +0x65
Dec 28 07:01:26 az neofs-node[364505]: github.com/nspcc-dev/neofs-node/pkg/local_object_storage/engine.Put(0xc06d928b80?, 0xc06b1b8dc8?)
Dec 28 07:01:26 az neofs-node[364505]: github.com/nspcc-dev/neofs-node/pkg/local_object_storage/engine/put.go:158 +0x19
Dec 28 07:01:26 az neofs-node[364505]: main.engineWithoutNotifications.Put({0x20301b?}, 0x20301b?)
```
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
Because synchronization _most likely_ will have apply already existing
operations, it is much faster to check their presence in a read
transaction. However, always doing this will degrade the perfomance
for normal `Apply`. And, let's be honest, it is already not good.
Thus we add a separate parameter which specifies whether this logic is
enabled.
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
Both `meta` and `write-cache` are expected to have a fast underlying disk,
so it does not seem like an optimisation. Moreover, `write-cache`'s `Head`
is a `Get` with payload cutting, it _must_ use more memory for no reason
(`meta` was created for such requests). Also, `write-cache` does not allow
performing any "meta" relations checks (such as locking, tombstoning).
Signed-off-by: Pavel Karpy <p.karpy@yadro.com>
Node children are not sorted and could occur in any order.
Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
Signed-off-by: Evgenii Stratonikov <evgeniy@morphbits.ru>
Includes:
1. mode change read lock operation in every exported method that r/w the
underlying database;
2. returning `ErrDegradedMode` logical error if any exported method is
called in degraded (without a metabase) mode.
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
Includes extending listing methods in the Storage Engine with object types.
It allows tuning replication/policer algorithms: container nodes do
not remove `LOCK` objects as redundant and try to fulfill `LOCK` placement
on the ohter container nodes.
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
It allows keeping all the locked objects safe after metabase
resynchronization. Currently, all `LOCK` objects are broadcast to all nodes
in a container, it guarantees `LOCK` object presence in a regular situation.
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
It was needed before we started to flush during transition to
`degraded` mode. Now it is confusing.
Signed-off-by: Evgenii Stratonikov <evgeniy@morphbits.ru>
It is not an error: removing virtual object is expected and should be just
skipped. Getting a virtual object with `raw` flag is considered as an
impossible action, all the virtual objects removals will be handled via
their children's removals implicitly.
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
Currently there is a possibility for modifying operations to fail
because of I/O errors and a new tree to be created on another shard.
This commit adds existence check for modifying operations.
Read operations remain as they are, not to slow things.
`TreeDrop` is an exception, because this is a tree removal and trying
multiple shards is not an unwanted behaviour.
Signed-off-by: Evgenii Stratonikov <evgeniy@morphbits.ru>
By default writecache puts the whole object to update storage ID.
This logic comes from the times when we needed to put objects
in the metabase by the writecache itself. Now this is done by the
blobstor at unmarshaling objects during flush only to update storage ID
is an overkill.
Signed-off-by: Evgenii Stratonikov <evgeniy@morphbits.ru>
All logic errors are wrapped in `logicerr.Logical` type and do not
affect shard error counter.
Signed-off-by: Evgenii Stratonikov <evgeniy@morphbits.ru>
In previous implementation `Shard.Delete` logged writecache's removal
failures in `error` level. There is a need to decrease severity of these
log records since they aren't critical and don't require individual
review.
Change level of the message to `info`.
Signed-off-by: Leonard Lyubich <ctulhurider@gmail.com>
From the `Bucket.ForEach` doc:
```
The provided function must not modify the bucket; this will result in undefined behavior.
```
Signed-off-by: Evgenii Stratonikov <evgeniy@morphbits.ru>
After the refactor there are new storage characteristics: a type and
a general storage id (that could be stringified).
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
Iterate over every shard and search for the container's trees. Final result
is a concatenation of shards' results. It is considered that one fixed tree
is placed on one fixed shard but the different trees of a fixed container
could be placed on different shards.
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
In the 2nd version, there was a database format change: buckets have changed
their keys, so it becomes impossible to check the version in the 1 -> 2+
migrations because of different buckets that store info about the version.
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
If shard ID is stored in metabase (it is not the first time boot), read it,
set it, use it (not a generated one) in the metrics writer.
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
Make it store its internal `zap.Logger`'s level. Also, make all the
components to accept internal `logger.Logger` instead of `zap.Logger`; it
will simplify future refactor.
Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>
Currently, when removing shard special care must be taken with respect
to shard numbering. `mode: disabled` allows to leave shard configuration
in place while also ignoring it during initialization. This makes
disk replacement much more convenient.
Signed-off-by: Evgenii Stratonikov <evgeniy@morphbits.ru>
