Replaced UpdateMetadata{Request, Response}, LeaderAndIsr{Request, Response}
and StopReplica{Request, Response} with the automated protocol classes.
Updated the JSON schema for the 3 request types to be more consistent and
less strict (if needed to avoid duplication).
The general approach is to avoid generating new collections in the request
classes. Normalization happens in the constructor to make this possible. Builders
still have to group by topic to maintain the external ungrouped view.
Introduced new tests for LeaderAndIsrRequest and UpdateMetadataRequest to
verify that the new logic is correct.
A few other clean-ups/fixes in code that was touched due to these changes:
* KAFKA-8956: Refactor DelayedCreatePartitions#updateWaiting to avoid modifying
collection in foreach.
* Avoid unnecessary allocation for state change trace logging if trace logging is not enabled
* Use `toBuffer` instead of `toList`, `toIndexedSeq` or `toSeq` as it generally performs
better and it matches the performance characteristics of `java.util.ArrayList`. This is
particularly important when passing such instances to Java code.
* Minor refactoring for clarity and readability.
* Removed usage of deprecated `/:`, unused imports and unnecessary `var`s.
* Include exception in `AdminClientIntegrationTest` failure message.
* Move StopReplicaRequest verification in `AuthorizerIntegrationTest` to the end
to match the comment.
Reviewers: Colin Patrick McCabe <cmccabe@apache.org>
Profiling while benchmarking shows unnecessary calls to
`responseDataToLogString` in FetchSessionHandler when logging was set to
INFO level. This leads to 1.47% of the JVM CPU time going to this method.
Fix it by checking if debug logging is enabled.
Reviewers: Ismael Juma <ismael@juma.me.uk>
The Kafka Clients library includes a version file that contains its version and Git commit ID.
Since Kafka Streams wants to expose version and commit ID in the metrics it needs to read the version file. To enable the users to check during runtime for version mismatches between the Streams library and the Clients library, the version file is copied from Clients during build
time and during runtime only the Streams version file is read.
If Streams would read Clients' version file during runtime, it would read a wrong version and commit ID if the libraries where not build from repositories in different states.
Reviewers: John Roesler <vvcephei@users.noreply.github.com>, Guozhang Wang <wangguoz@gmail.com>
Previous KafkaStreamsTest takes 2min20s on my local laptop, because lots of its integration test which is producing / consuming records, and checking state directory file system takes lots of time. On the other hand, these tests should be well simplified with mocks.
This test reduces the test from a clumsy integration test class into a unit tests with mocks of its internal modules. And some other test functions should not be in KafkaStreamsTest actually and have been moved to other modular test classes. Now it takes 2s.
Also it helps removing the potential flakiness of the following (some of them are claimed resolved only because we have not seen them recently, but after looking at the test code I can verify they are still flaky):
* KAFKA-5818 (the original JIRA ticket indeed exposed a real issue that has been fixed, but the test itself remains flaky)
* KAFKA-6215
* KAFKA-7921
* KAFKA-7990
* KAFKA-8319
* KAFKA-8427
Reviewers: Bill Bejeck <bill@confluent.io>, John Roesler <john@confluent.io>, Bruno Cadonna <bruno@confluent.io>
Add a version number to request and response headers. The header
version is determined by the first two 16 bit fields read (API key and
API version). For now, ControlledShutdown v0 has header version 0, and
all other requests have v1. Once KIP-482 is implemented, there will be
a v2 of the header which supports tagged fields.
Implemented KIP-440 to allow Connect converters to use record headers when serializing or deserializing keys and values. This change is backward compatible in that the new methods default to calling the older existing methods, so existing Converter implementations need not be changed. This changes the WorkerSinkTask and WorkerSourceTask to use the new converter methods, but Connect's existing Converter implementations and the use of converters for internal topics are intentionally not modified. Added unit tests.
Author: Yaroslav Tkachenko <sapiensy@gmail.com>
Reviewers: Ryanne Dolan <ryannedolan@gmail.com>, Ewen Cheslack-Postava <me@ewencp.org>, Randall Hauch <rhauch@gmail.com>
Move the generator checkstyle suppressions to a special section, rather
than mixing them in with the other sections. For generated code, do not
complain about variable names or cyclic complexity.
FieldType.java: remove isInteger since it isn't used anywhere. This way, we
don't have to decide whether a UUID is an integer or not (there are arguments
for both choices). Add FieldType#serializationIsDifferentInFlexibleVersions
and FieldType#isVariableLength.
HeaderGenerator: add the ability to generate static imports. Add
IsNullConditional, VersionConditional, and ClauseGenerator as easier ways of
generating "if" statements.
Add UUID to the list of types documented in Type#toHtml.
Type, Protocol, ArrayOf: use Type#isArray and Type#arrayElementType rather than typecasting to handle arrays. This is cleaner. It will also make it easier for us to add compact arrays (as specified by KIP-482) as a new array type distinct from the old array type.
Add MessageUtil#byteBufferToArray, as well as a test for it. We will need this for handling tagged fields of type "bytes".
Schema#Visitor: we don't need a separate function overload for visiting arrays. We can just call "visit(Type field)".
TestUUID.json: reformat the JSON file to match the others.
ProtocolSerializationTest: improve the error messages on failure. Check that each type has the name we expect it to have.
Reviewers: David Arthur <mumrah@gmail.com>, José Armando García Sancio <jsancio@gmail.com>, Vikas Singh <soondenana@users.noreply.github.com>
Some work needs to be done in Streams before we can incorporate cooperative rebalancing.
This PR lays the groundwork for it by doing some refactoring, including a behavioral change that affects eager ("normal") rebalancing as well: will no longer suspend standbys in onPartitionsRevoked, instead we just close any that were reassigned in onPartitionsAssigned
Reviewers: Bruno Cadonna <bruno@confluent.io>, Boyang Chen <boyang@confluent.io>, John Roesler <vvcephei@users.noreply.github.com>, Guozhang Wang <wangguoz@gmail.com>
A metric recorder runs in it own thread and regularly records RocksDB metrics from
RocksDB's statistics. For segmented state stores the metrics are aggregated over the
segments.
Reviewers: John Roesler <vvcephei@users.noreply.github.com>, A. Sophie Blee-Goldman <sophie@confluent.io>, Guozhang Wang <wangguoz@gmail.com>
1. Add the overloaded functions.
2. Update the code in Streams to use the batch API for better latency (this applies to both active StreamsTask for initialize the offsets, as well as the StandbyTasks for updating offset limits).
3. Also update all unit test to replace the deprecated APIs.
Reviewers: Christopher Pettitt <cpettitt@confluent.io>, Kamal Chandraprakash <kamal.chandraprakash@gmail.com>, Bill Bejeck <bill@confluent.io>
This is the last PR for the KIP-307.
NOTE : PR 6412 should be merge first
Thanks a lot for the review.
Reviewers: John Roesler <john@confluent.io>, Bill Bejeck <bbejeck@gmail.com>
I realized some flaky tests failed at setup or calls that tries to create offset topics, and I think using one partition and one replica would be sufficient in these cases.
Reviewers: Bill Bejeck <bill@confluent.io>
Cache-level metrics are refactor according to KIP-444:
tag client-id changed to thread-id
name hitRatio changed to hit-ratio
made backward compatible by using streams config built.in.metrics.version
Reviewers: Guozhang Wang <wangguoz@gmail.com>, Bill Bejeck <bbejeck@gmail.com>
Part of supporting KIP-213 ( https://cwiki.apache.org/confluence/display/KAFKA/KIP-213+Support+non-key+joining+in+KTable ). Murmur3 hash is used as a hashing mechanism in KIP-213 for the large range of uniqueness. The Murmur3 class and tests are ported directly from Apache Hive, with no alterations to the code or dependencies.
Author: Adam Bellemare <adam.bellemare@wishabi.com>
Reviewers: John Roesler <vvcephei@users.noreply.github.com>, Ismael Juma <ismael@juma.me.uk>, Guozhang Wang <wangguoz@gmail.com>
Closes#7271 from bellemare/murmur3hash
KIP-455 (18d4e57f6e8c67ffa7937fc855707d3a03cc165a) bumped the LeaderAndIsr version to 3 but did not change the Controller code to actually send the new version. The ControllerChannelManagerTest had a bug which made it assert wrongly, hence why it did not catch it. This patch fixes said test.
Because the new fields in LeaderAndIsr are not used yet, the gap was not caught by integration tests either.
Reviewers: Jason Gustafson <jason@confluent.io>
Reviewers: Bruno Cadonna <bruno@confluent.io>, A. Sophie Blee-Goldman <sophie@confluent.io>, Boyang Chen <boyang@confluent.io>, Matthias J. Sax <matthias@confluent.io>
It's useful to know when the cleaner runs what the last modified time
of the segment and the deletion horizon is. The current log message
only allows you to infer that one is greater than the other.
Reviewers: Jun Rao <junrao@gmail.com>
This PR makes two changes to code in the ReplicaManager.updateFollowerFetchState path, which is in the hot path for follower fetches. Although calling ReplicaManager.updateFollowerFetch state is inexpensive on its own, it is called once for each partition every time a follower fetch occurs.
1. updateFollowerFetchState no longer calls maybeExpandIsr when the follower is already in the ISR. This avoid repeated expansion checks.
2. Partition.maybeIncrementLeaderHW is also in the hot path for ReplicaManager.updateFollowerFetchState. Partition.maybeIncrementLeaderHW calls Partition.remoteReplicas four times each iteration, and it performs a toSet conversion. maybeIncrementLeaderHW now avoids generating any intermediate collections when updating the HWM.
**Benchmark results for Partition.updateFollowerFetchState on a r5.xlarge:**
Old:
```
1288.633 ±(99.9%) 1.170 ns/op [Average]
(min, avg, max) = (1287.343, 1288.633, 1290.398), stdev = 1.037
CI (99.9%): [1287.463, 1289.802] (assumes normal distribution)
```
New (when follower fetch offset is updated):
```
261.727 ±(99.9%) 0.122 ns/op [Average]
(min, avg, max) = (261.565, 261.727, 261.937), stdev = 0.114
CI (99.9%): [261.605, 261.848] (assumes normal distribution)
```
New (when follower fetch offset is the same):
```
68.484 ±(99.9%) 0.025 ns/op [Average]
(min, avg, max) = (68.446, 68.484, 68.520), stdev = 0.023
CI (99.9%): [68.460, 68.509] (assumes normal distribution)
```
Reviewers: Ismael Juma <ismael@juma.me.uk>, Jason Gustafson <jason@confluent.io>
* log lock acquistion failures on the state store
* Document required uniqueness of state.dir path
* Move bunch of log calls around task state changes to DEBUG
* More readable log messages during partition assignment
Reviewers: Matthias J. Sax <mjsax@apache.org>, A. Sophie Blee-Goldman <sophie@confluent.io>, Guozhang Wang <wangguoz@gmail.com>
Given that the tests do not create clusters larger than 3, we do not gain much by creating 50 partitions for that topic. Reducing it should slightly increase test startup and shutdown speed.
Reviewers: Matthias J. Sax <mjsax@apache.org>, Guozhang Wang <wangguoz@gmail.com>, Bill Bejeck <bbejeck@gmail.com>
The streams config built.in.metrics.version is needed to add metrics in
a backward-compatible way. However, not in every location where metrics are
added a streams config is available to check built.in.metrics.version. Thus,
the config value needs to be exposed through the StreamsMetricsImpl object.
Reviewers: John Roesler <vvcephei@users.noreply.github.com>, Guozhang Wang <wangguoz@gmail.com>
This adds an administrative API to delete consumer offsets of a group as well as extends the mechanism to expire offsets of consumer groups.
It makes the group coordinator aware of the set of topics a consumer group (protocol type == 'consumer') is actively subscribed to, allowing offsets of topics which are not actively subscribed to by the group to be either expired or administratively deleted. The expiration rules remain the same.
For the other groups (non-consumer), the API allows to delete offsets when the group is empty and the expiration remains the same.
Reviewers: Stanislav Kozlovski <stanislav_kozlovski@outlook.com>, Jason Gustafson <jason@confluent.io>
Replace the `<table>` elements by `<ul>` so the full page width can be used for the configuration descriptions instead of only a very narrow column. I moved the other fields (Type, Default Value, etc) below each entry.
Reviewers: Boyang Chen <boyang@confluent.io>, Jason Gustafson <jason@confluent.io>
Key changes include:
1. Moves general offset limit updates down to StandbyTask.
2. Updates offsets for StandbyTask at most once per commit and only when we need and updated offset limit to make progress.
3. Avoids writing an 0 checkpoint when StandbyTask.update is called but we cannot apply any of the records.
4. Avoids going into a restoring state in the case that the last checkpoint is greater or equal to the offset limit (consumer committed offset). This needs special attention please. Code is in
StoreChangelogReader.
5. Does update offset limits initially for StreamTask because it provides a way to prevent playing to many records from the changelog (also the input topic with optimized topology).
NOTE: this PR depends on KAFKA-8816, which is under review separately. Fortunately the changes involved are few. You can focus just on the KAFKA-8755 commit if you prefer.
Reviewers: Matthias J. Sax <mjsax@apache.org>, Guozhang Wang <wangguoz@gmail.com>
The purpose of this PR is to add static membership support for range assignor. More details for the motivation in here.
Similar to round robin assignor, if we are capable of persisting member identity across generations, we will reach a much more stable assignment.
Reviewers: John Roesler <vvcephei@users.noreply.github.com>, Guozhang Wang <wangguoz@gmail.com>, Bruno Cadonna <bruno@confluent.io>
Ismael Juma
Lucas Bradstreet
huxi
Bruno Cadonna
Guozhang Wang
Manikumar Reddy
Rajini Sivaram
Colin Patrick McCabe
Yaroslav Tkachenko
A. Sophie Blee-Goldman
Matthias J. Sax
khairy
Florian Hussonnois
Kamal Chandraprakash
John Roesler
Adam Bellemare
Stanislav Kozlovski
Richard Yu
Jason Gustafson
Randall Hauch
vinoth chandar
David Jacot
Colin Patrick McCabe
Mickael Maison
cpettitt-confluent
Boyang Chen