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
Satellites set their configuration values to default values using
cfgstruct, however, it turns out our tests don't test these values
at all! Instead, they have a completely separate definition system
that is easy to forget about.
As is to be expected, these values have drifted, and it appears
in a few cases test planet is testing unreasonable values that we
won't see in production, or perhaps worse, features enabled in
production were missed and weren't enabled in testplanet.
This change makes it so all values are configured the same,
systematic way, so it's easy to see when test values are different
than dev values or release values, and it's less hard to forget
to enable features in testplanet.
In terms of reviewing, this change should be actually fairly
easy to review, considering private/testplanet/satellite.go keeps
the current config system and the new one and confirms that they
result in identical configurations, so you can be certain that
nothing was missed and the config is all correct.
You can also check the config lock to see what actual config
values changed.
Change-Id: I6715d0794887f577e21742afcf56fd2b9d12170e
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
rate
Graceful exit is very slow at the moment. Over the last couple days we
increase the batch size on Stefans satellite to 1000 but as a side
effect the error rate was increased. With a batch size of 500 the error
rate looks stable.
This PR will increase the default to batch size to 300. Graceful exit
will still be painful slow but at least it will be a bit faster. At the
same time this PR also increases the number of errors we tolerate. We
don't want to DQ slow storage nodes just because they didn't finish all
300 transfers in time. We want to give them more retries.
Change-Id: I92e3f99e116d4988457d8b902a88e85ed1bcc1a7
this commit updates our monkit dependency to the v3 version where
it outputs in an influx style. this makes discovery much easier
as many tools are built to look at it this way.
graphite and rothko will suffer some due to no longer being a tree
based on dots. hopefully time will exist to update rothko to
index based on the new metric format.
it adds an influx output for the statreceiver so that we can
write to influxdb v1 or v2 directly.
Change-Id: Iae9f9494a6d29cfbd1f932a5e71a891b490415ff
Adds check to see if storage nodes are eligible to initiate
graceful exit, by checking their CreatedAt date and seeing if
their "age" is greater than the new config value:
NodeMinAgeInMonths
The default for this value is 6 months for now.
https://storjlabs.atlassian.net/browse/V3-3357
Change-Id: Ib807ab8987ddb5a38a27a83886490f73fe8c5816
* 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
* update lock file and add comment
* add created at and bytes transferred
* cleanup
* rename db func to GetGracefulExitNodesByTimeFrame
* fix flag
* split into two overlay functions
* := to =
* fix test
* add node not found error class
* fix overlay test
* suggested test changes
* review suggestions
* get exit status from overlay.Get()
* check rows.Err
* fix panic when ExitFinishedAt is nil
* fix comments in cmdGracefulExit
