Currently, graceful exit is a complicated subsystem that keeps a queue
of all pieces expected to be on a node, and asks the node to transfer
those pieces to other nodes one by one. The complexity of the system
has, unfortunately, led to numerous bugs and unexpected behaviors.
We have decided to remove this entire subsystem and restructure graceful
exit as follows:
* Nodes will signal their intent to exit gracefully
* The satellite will not send any new pieces to gracefully exiting nodes
* Pieces on gracefully exiting nodes will be considered by the repair
subsystem as "retrievable but unhealthy". They will be repaired off of
the exiting node as needed.
* After one month (with an appropriately high online score), the node
will be considered exited, and held amounts for the node will be
released. The repair worker will continue to fetch pieces from the
node as long as the node stays online.
* If, at the end of the month, a node's online score is below a certain
threshold, its graceful exit will fail.
Refs: https://github.com/storj/storj/issues/6042
Change-Id: I52d4e07a4198e9cb2adf5e6cee2cb64d6f9f426b
The tests are forked from the chore tests with slight adaptations for
being run against the ranged loop. I also moved a benchmark for the
database from chore_test.go to db_test.go.
The pathcollector is reused as a rangedloop.Partial.
https://github.com/storj/storj/issues/5234
Change-Id: I56182031d133812a9f4d4a433c01b9150af39f31
Remove the logic associated to the old transfer queue.
A new transfer queue (gracefulexit_segment_transfer_queue) has been created for migration to segmentLoop.
Transfers from the old queue were not moved to the new queue.
Instead, it was still used for nodes which have initiated graceful exit before migration.
There is no such node left, so we can remove all this logic.
In a next step, we will drop the table.
Change-Id: I3aa9bc29b76065d34b57a73f6e9c9d0297587f54
At some point we moved metabase package outside Metainfo
but we didn't do that for satellite structure. This change
refactors only tests.
When uplink will be adjusted we can remove old entries in
Metainfo struct.
Change-Id: I2b66ed29f539b0ec0f490cad42c72840e0351bcb
For being able to use the segment metainfo loop, graceful exit transfers have to include the segment stream_id/position instead of the path. For this, we created a new table graceful_exit_segment_transfer_queue that will replace the graceful_exit_transfer_queue. The table has been created in a previous migration and made accessible through graceful exit db in another one.
This changes makes graceful exit enqueue transfer items for new exiting nodes in the new table.
Change-Id: I7bd00de13e749be521d63ef3b80c168df66b9433
For being able to use the segment metainfo loop, graceful exit transfers have to include the segment stream_id/position instead of the path. For this, we created a new table graceful_exit_segment_transfer_queue that will replace the graceful_exit_transfer_queue. The table has been created in a previous migration.
This change gives access to this table.
Graceful Exit doesn't use the table yet, this will be done in a next change.
Change-Id: I6c09cff4cc45f0529813a8898ddb2d14aadb2cb8
Use the 'AS OF SYSTEM TIME' Cockroach DB clause for the Graceful Exit
(a.k.a GE) queries that count the delete the GE queue items of nodes
which have already exited the network.
Split the subquery used for deleting all the transfer queue items of
nodes which has exited when CRDB is used and batch the queries because
CRDB struggles when executing in a single query unlike Postgres.
The new test which has been added to this commit to verify the CRDB
batch logic for deleting all the transfer queue items of the exited
nodes has raised that the Enqueue method has to run in baches when CRDB
is used otherwise CRDB has return the error "driver: bad connection"
when a big a amount of items are passed to be enqueued. This error
didn't happen with the current test implementation it was with an
initial one that it was creating a big amount of exited nodes and
transfer queue items for those nodes.
Change-Id: I6a099cdbc515a240596bc93141fea3182c2e50a9
metabase has become a central concept and it's more suitable for it to
be directly nested under satellite rather than being part of metainfo.
metainfo is going to be the "endpoint" logic for handling requests.
Change-Id: I53770d6761ac1e9a1283b5aa68f471b21e784198
At some point we might try to change original segment RS values and set Pieces according to the new values. This change adds add NewRedundancy parameter for UpdateSegmentPieces method to give ability to do that. As a part of change NewPieces are validated against NewRedundancy.
Change-Id: I8ea531c9060b5cd283d3bf4f6e4c320099dd5576
This enables the transfer of pieces from an on-going multipart upload.
Tests are also modified to take into account pending multipart uploads.
See https://storjlabs.atlassian.net/browse/PG-161
Change-Id: I35d433c44dd6e618667e5e8f9f998ef867b9f1ad
metabaseSegmentKey` TransferQueueItem
We are unifying which name (and type) we are using for value we are
using to point to segment. We want to use `key` instead of `path`.
Dedicated type `metabase.SegmentKey` was created for this purposes also.
This change is doing refactoring around gracefulexit.
Change-Id: I90d51ff087b206179e61d5f1bc95f4709d76f917
This runs each benchmark for one iteration to ensure that they are
valid. Unfortunately, it does not give any useful metrics as output.
Change-Id: I68940398c8dd849aed656bd12656f48d5df10128
With this change RS configuration will be set on satellite. Uplink with
get RS values with BeginObject request and will use it. For backward
compatibility and to avoid super large change redundancy scheme stored
with bucket is not touched. This can be done in future.
Change-Id: Ia5f76fc10c37e2c44e4f7b8754f28eafe1f97eff
Remove direct dependency on uplink.RSConfig, this simplifies
moving the config file without introducing weird dependencies.
Change-Id: I7fd2a145401e0205d7047631df9d2810241efeec
* add overall failure percentage check and inactive time frame check before sending a response to sno
* update comment
* delete node from transfer queue if it has been inactive for too long
* fix linting error
* add test config value
* fix nil pointer
* add config value into testplanet
* add unit test for overall failure threshold
* move timeframe threshold to chore
* update protolock
* add chore test
* add per peiece failure count logic
* change config name from EndpointMaxFailures to MaxFailuresPerPiece
* address comments
* fix linting error
* add error handling for no row returned from progress table
* fix test for graceful exit chore on storagenode
* fix typo InActive -> Inactive
* improve readability for failure threshold calculation
* update config lock
* change error handling for GetProgress in graceful exit endpoint on the satellite side
* return proper rpc error in endpoint
* add check in chore test for checking finish timestamp and queue
