We shall ignore certain error cases during query processing. This layer
provides an easy interface for that.
Note that this is also done in the V1 client, just in a more hidden /
hard-to-test manner.
For #8349.
Defines an RPC service to be used by two peers to converge their schema
cache content by exchanging their serialised Merkle Search Tree pages (a
compact representation of the MST itself).
This will be used in the latter half of the following sync protocol:
┌─────┐ ┌────┐
│Local│ │Peer│
└──┬──┘ └─┬──┘
│ [1] Send content hash │
│────────────────────────>
│ │
│ ┌───────────────┐
│ │Compute hash, │
│ │stop if equal │
│ └───────────────┘
│ │
│ ╔════════════════╗ │
═══════════════════════╪═══╣ Switch to gRPC ╠═══╪═══════════════════════
│ ╚════════════════╝ │
│ │
│[2] Serialised MST pages│
│<────────────────────────
│ │
┌──────────────┐ │
│Perform diff │ │
└──────────────┘ │
│ [3] Inconsistent pages │
│────────────────────────>
│ │
│ │
╔═══════╤════╪════════════════════════╪════════════╗
║ LOOP │ For each inconsistent page │ ║
╟───────┘ │ │ ║
║ │ [4] Scheams │ ║
║ │<──────────────────────── ║
╚════════════╪════════════════════════╪════════════╝
┌──┴──┐ ┌─┴──┐
│Local│ │Peer│
└─────┘ └────┘
The initial consistency probe request [1] is sent over gossip and is
used to trigger a further sync of inconsistent MST content if necessary.
This message is a no-op if the MSTs are found to be fully consistent.
If an inconsistency is detected between the two peers, the protocol
switches to perform RPC over TCP, calling the AntiEntropyService defined
in this commit to complete the sync process.
The receiver of the consistency probe [1] calls GetTreeDiff and provides
the their MST pages [2], causing the local node to compute the diff
between the two MSTs, and return the set of inconsistent ranges [3] that
require convergence.
Once the set of inconsistent ranges have been identified, the peer pulls
all the schemas within those ranges and merges them into the local cache
to ensure it has all the content of the source node.
Once this protocol has run in both directions between two peers (and in
absence of further updates between runs) then these two peers are
guaranteed to have converged.
* feat: impl `PartialEq + Eq` for `TestError`
* feat: i->q V2 circuit breaker
This is a straight port from V1, it even uses the same test. The code is
copied though (instead of reusing the old one) because the interface in
the V2 client is so different and the new testing infra is also nicer
(IMHO).
For #8349.
---------
Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>
This function is largely duplicated with namespace_to_proto, and the
other responses in this file don't make helper functions for
constructing the response type, so make Create more similar to the other
actions.
So that the same conversion can happen in the tests and one assert_eq!
can check everything rather than repeating lots of assertions for every
test for every field.
So that we can use PartialEq rather than comparing each field
individually.
Also take a reference to a namespace; this function doesn't need
ownership.
When gap-filling make the output time array have the same timezone
as the imput time array.
Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>
I was confused about whether validate_or_insert_schema should return all
columns a table has in the catalog if another process has added some.
Dom explained that no, this is by design-- the validate_or_insert_schema
function shouldn't be fetching any extra columns from the catalog, only
inserting missing columns from the diff set being processed during a
write.
The NamespaceCache/gossip system takes care of eventually converging
schemas at a higher level.
To avoid anyone having to go through the understanding path I just did,
encode this expected behavior in a test for future reference.
Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>
Update the selector functions to output the selected time in the
same timezone as input time array. This will not have any effect
on the rest of the system yet as timezones are not used anywhere.
This change is being done in preparation for making use of timezones.
Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>
Changes the default ingester configuration to assign half the logical
cores to datafusion for persist execution. Prior to this commit,
datafusion always used 4 threads by default.
In situations where the ingesters are configured with 4 logical cores or
less, the periodic persist can start enough persist jobs to keep the 4
threads assigned to datafusion busy. Because there are enough threads to
saturate all CPU cores, these CPU-heavy persist threads can impact write
latency by stealing CPU time from the tokio runtime threads.
This change assigns exactly half the threads to DF by default, ensuring
there's always N/2 cores to service I/O heavy API requests.
This changes the per-namespace buffered partition limiter to only
consider non-empty partitions when enforcing the partition limit.
Non-empty partitions cost a small amount of RAM, but are not added to
the persist queue - only non-empty partitions will need persisting, so
the limiter only needs to limit non-empty partitions.
This commit also significantly improves the consistency properties of
the limiter - the limit no longer suffers from a small window of
"overrun" due to non-atomic updates w.r.t partition creation - the limit
is now exact.
As an optimisation, partitions are not created at all if the limit has
been reached, preventing an accumulation of empty partitions whilst the
limit is being enforced.
Use the PartitionDataBuilder in the MockPartitionProvider, allowing the
test caller to specify any necessary parameters, but still allow the
mock provider to inject the arguments it was called with.
This adds a level of assurance that multiple error states set are
ignored when they are all are present in the exceptions, while disjoint
error states and exceptions return an error. Arbitrary sets could be
covered, but would like require taking a non-const array for
`read_with_exceptions`.
Dom
Joe-Blount
dependabot[bot]
Andrew Lamb
Marco Neumann
Carol (Nichols || Goulding)
Martin Hilton
Carol (Nichols || Goulding)
kodiakhq[bot]
Nga Tran
Fraser Savage