Release: 1.0.0

Release Blog Post: https://camunda.com/blog/2021/05/camunda-cloud-10-released/
Update Guide: https://docs.camunda.io/docs/guides/update-guide/026-to-100/

Enhancements

Broker

• Elasticsearch exporter: List urls for connection (#5635)
• Support User Tasks (#6116)

Java Client

• custom serializer configuration for zeebe Java client (#5578)
• Add direct support for cloud in java client (#3932)
• Job worker should apply backoff on job polling in case of service unavailable (#4443)

Go Client

• Job worker should apply backoff on job polling in case of service unavailable (#4443)

Bug Fixes

Broker

• A call activity can't be completed or terminated (#6959)
• Variables are overridden when the subprocess is completed (#6926)
• Deploy command times out for processes with a timer start event (#6911)
• Memory leak in NettyMessagingService (#6878)
• Childs can trigger EventSubProcess when FlowScope is in TERMINATING state (#6846)
• Nullpointer exception when terminating subprocess (#6829)
• On restart journal index is not updated for existing segments (#6786)
• Follower doesn't flush written entries if append is only partially written (#6784)
• ElasticExporter logs flush failures as error (#6741)
• CompletionException: io.zeebe.journal.file.record.CorruptedLogException: Record doesn't match checksum. Log segment may be corrupted. (#6709)
• Follower is not handling outofdiskspace correctly (#6653)
• Boundary events are not correctly terminated (#6587)
• Process instance with parallel flow can't be completed after interruption by Event sub process (#6565)
• StateWriter doesn't use ReprocessingStreamWriter during reprocessing (#6557)
• Process can't be completed after concurrent message correlation (#6552)
• CurrentEntry is not update correctly when LeaderAppender reset the reader. (#6534)
• Can't append entries due to Low system clock granularity causes (#6520)
• Job key is reused when creating incident as the incident key (#6516)
• Redeploying process model with Timer start event causes retriggering (#6515)
• Journal attempts to read truncated entries (#6470)
• ZeebePartition doesn't handle exceptions properly (#6391)
• Snapshot is not valid. There is no checksum file. (#6377)
• seekToAsqn() should not return a record with no ASQN (#6358)
• LogStorageAppender should use the LeaderRole from correct term (#6346)
• Failed to append block because it was to large causes next append to fail (#6318)
• Inconsistent log (#6316)
• Concurrent access to snapshotstore causes partial snapshots to get committed (#6255)
• Follower index is sometimes not cleaned up correctly (#6237)
• Startup failure logged at incorrect level (#6109)
• Incorrect snapshot positions based on invalid last processed position (#6049)
• Gateway not able to parse ipv6 addresses (#5951)
• Job worker name should be optional (#5819)
• Gateway communicated with broker in different cluster (#5641)
• IllegalStateException: Expected to find event with the snapshot position ... (#5500)
• Failed to bind TCP server to port 0.0.0.0:8443 due to io.netty.channel.unix.Errors$NativeIoException: bind(..) failed: Address already in use (#5426)
• The source record position may point to a wrong record (#5420)
• Potential race condition in Raft cluster join process (#5292)
• SegmentedJournalWriter.truncate() and readers are not thread safe (#4198)

Go client

• Zbctl human output from status sub command is a bit broken (#6692)
• Go job poller handles error incorrectly when remaking job stream (#6210)

Misc

• Improve handling of time in randomly generated processes (#6568)
• Rename ProcessInstanceSubscription to ProcessMessageSubscription (#6566)
• New BPMN element type for event subprocesses (#6542)
• Key of Message/WorkflowInstance-Subscription Records is not set (#2805)
• Diff in zbctl test output is incorrect (#6967)
• Re-enable Go dependency updates (#6940)
• Snapshot log statement is incorrectly formatted (#6853)
• Intermediate catch event is terminated twice (#6643)
• Most atomix-cluster tests not running on the CI (#6613)
• IllegalStateException: Expected to find a workflow deployed with key '2251799813685249' but not found. (#6518)
• Property based tests don't work with flaky test detection (#6347)
• Gateway keeps retrying rejections (#6166)
• Gateway metric update causes NullPointerException (#6127)
• Panel Number of not processed records is floating around (#6124)
• Open file descriptor graph is not portable (#6079)
• Handle INACTIVE partition role in gateway (#6053)
• TestCommonCommands/using_json_flag fails locally (#6037)

Merged Pull Requests

• Remove ignoreVariablesAbove ES configuration option (#7001)
• Ignore missing files on transient snapshot abort (#6981)
• chore(benchmarks): Reduce exports and PVC claims (#6720)
• Add user task support (#6667)
• chore(benchmark): build project on create (#6585)
• Temporary fix for SBE compilation step (#6584)
• Log key on blacklist process instance (#6578)
• chore(test-util): log substituted numbers for debug conditions (#6574)
• Avoid using the logstream writer on reprocessing (#6573)
• Release 1.0.0 alpha3 (#6572)
• Rename process instance subscription to process message subscription (#6567)
• Replace token count with counting of active sequence flows and element instances (#6562)
• test(test-util): add compact logging for engine records (#6560)
• Apply event-sourcing to the process instance subscription correlate processor (#6558)
• Apply event-sourcing to the process instance subscription close processor (#6556)
• Apply event sourcing to creating a new process instance subscription (#6553)
• chore(engine): generate key for updated variable document event (#6548)
• chore(raft): fix equals implementation of RaftLogEntry (#6545)
• chore(snapshots): remove timestamp from snapshot id (#6544)
• chore(broker): make FileBasedSnapshotStore actor io-bound (#6540)
• Use state writer in BpmnEventSubscriptionBehavior (#6536)
• fix(broker): set currentEntry to null when reset to firstIndex (#6535)
• Apply event-sourcing to the process instance subscription open processor (#6532)
• Incidents on failing jobs generate a new key (#6529)
• Migrate transfer variables on sub process (#6526)
• Migrate unsubscribe event subscription (#6525)
• Migrate activate child instance (#6524)
• Apply event sourcing to incident resolve/resolved (#6522)
• Immutable zeebe state (#6514)
• chore(journal): replace kryo with sbe (#6513)
• Apply event sourcing to the incident create and created processors (#6512)
• Apply event-sourcing to the message start event subscription processors (#6510)
• chore(deps): update dependency io.netty:netty-bom to v4.1.60.final (#6509)
• chore(atomix): rename and restructure raft entry types (#6503)
• chore(ci): use new cloud credentials (#6501)
• chore(clients/go): command results are outputted instead of logged (#6498)
• Migrate creating event scope (#6496)
• Store records for incidents on activating (#6495)
• Improving the message subscription state (#6494)
• chore(deps): update version.protobuf to v3.15.5 (#6493)
• fix(deps): update module github.com/google/go-cmp to v0.5.5 (#6491)
• chore(deps): update version.protobuf to v3.15.4 (#6487)
• chore(deps): update dependency com.fasterxml.jackson:jackson-bom to v2.12.2 (#6486)
• chore(engine): event sourcing for JobBatchIntent processors (#6485)
• Do not write duplicate workflow record (#6483)
• Refactor DbWorkflowState (#6482)
• Apply event-sourcing to the message subscription reject processor (#6479)
• Apply event-sourcing to the message subscription delete processor (#6476)
• chore(deps): update dependency net.alchim31.maven:scala-maven-plugin to v4.4.1 (#6475)
• Apply event-sourcing to the message subscription correlate processor (#6474)
• chore(journal): split journal record into metadata and indexed record (#6473)
• Prevent reading truncated entries (#6471)
• Apply event-sourcing to the message subscription create processor (#6469)
• chore(deps): update dependency org.apache.commons:commons-lang3 to v3.12.0 (#6468)
• Make exporter accept multiple elasticsearch hosts (#6467)
• chore(test): ensure to use random process ids for CreateDeploymentTest (#6466)
• chore(test): ensure to use random process ids for CallActivityIncidentTest (#6465)
• Apply event sourcing to variables (#6464)
• Extract variable document merging into specific behavior (#6463)
• Enable getting an existing variable's key from the state (#6462)
• fix(deps): update golang.org/x/net commit hash to e18ecbb (#6460)
• Migrate deployment processors to event sourcing (#6459)
• Improve the stability of the replay tests (#6458)
• fix(deps): update golang.org/x/net commit hash to 39120d0 (#6457)
• Complete Deployment distribution (#6456)
• Rename workflow to process in whole repository (#6455)
• chore(deps): update version.protobuf to v3.15.3 (#6452)
• Apply event sourcing to the parallel gateway processor (#6451)
• Allow detecting if a variable is declared locally in a given scope (#6449)
• Provide a way to get the parent scope key of a variable scope (#6448)
• Extract the document indexing logic out of the variable state (#6446)
• Align deployment distribution (#6444)
• chore(deps): update dependency com.google.api.grpc:proto-google-common-protos to v2.1.0 (#6441)
• fix(deps): update module google.golang.org/grpc to v1.36.0 (#6440)
• chore(broker): use previous index for snapshot id (#6439)
• chore(journal): add more tests for journal seek (#6436)
• Improve the message state (#6435)
• fix(deps): update golang.org/x/net commit hash to 3d97a24 (#6433)
• chore(deps): update version.protobuf to v3.15.2 (#6432)
• chore(deps): update golangci/golangci-lint-action action to v2.5.1 (#6431)
• chore(deps): update version.grpc to v1.36.0 (#6425)
• Lower the log level for unimplemented event appliers (#6424)
• chore(deps): update dependency org.scala-lang:scala-library to v2.13.5 (#6421)
• chore(deps): update dependency org.mockito:mockito-junit-jupiter to v3.8.0 (#6420)
• chore(deps): update dependency org.mockito:mockito-core to v3.8.0 (#6419)
• fix(deps): update golang.org/x/net commit hash to 9060382 (#6418)
• Reset lastAppendedEntry on reset (#6415)
• Introduce DeploymentDistribution COMPLETE-COMPLETED (#6412)
• chore(deps): update dependency org.yaml:snakeyaml to v1.28 (#6410)
• Make all AppendListener methods default (#6409)
• Simplify log storage abstraction (#6408)
• chore(deps): update version.jqwik to v1.5.0 (#6406)
• chore(deps): update version.protobuf to v3.15.1 (#6405)
• fix(deps): update golang.org/x/net commit hash to 5f55cee (#6404)
• fix(deps): update golang.org/x/oauth2 commit hash to 9bb9049 (#6403)
• fix(deps): update module github.com/golang/mock to v1.5.0 (#6402)
• Remove old journal implementation (#6401)
• Apply event sourcing to the exclusive gateway processor (#6399)
• Remove unused configuration raft storage configuration (#6398)
• Remove unused raft storage StorageStatistics (#6396)
• Use always new appender (#6392)
• chore(snapshot): use actor naming pattern (#6389)
• chore(deps): update version.protobuf to v3.15.0 (#6386)
• fix(deps): update golang.org/x/oauth2 commit hash to ba52d33 (#6385)
• chore(deps): update spring boot to v2.4.3 (#6384)
• fix(broker): fix race condition in persisting snapshot (#6383)
• chore(journal): implement JournalRecord equals and hashcode (#6382)
• 6176 job processors part2 (#6381)
• Apply event sourcing to message publish processor (#6376)
• fix(monitor): rm duplicate id's (#6374)
• Use new journal (#6373)
• chore(deps): update prom/prometheus docker tag to v2.25.0 (#6372)
• Extract common logic used by MappedJournalSegment-Writer Reader (#6371)
• chore(deps): update version.micrometer to v1.6.4 (#6370)
• fix(deps): update module zeebe-io/zeebe/clients/go to v0.26.1 (#6369)
• Skip records with no valid asqn when seeking (#6367)
• Fix flaky BrokerReprocessingTest (#6366)
• Return next index for all seek methods in JournalReader (#6365)
• Generate workflows with a message start event (#6362)
• chore(deps): update golang.org/x/oauth2 commit hash to 16ff188 (#6361)
• chore(ci): run random property based tests in dedicated phase (#6359)
• Add infrastructure to migrate bpmn element processors (#6357)
• chore(atomix/storage): refactor Raft to not rely on reader state (#6353)
• fix(atomix): do not append invalid entries (#6345)
• 6176 event sourcing job processors - part 1 (#6344)
• Remove RaftLogReader#getNextIndex (#6342)
• Apply event sourcing to message expire processor (#6341)
• chore(deps): update golangci/golangci-lint-action action to v2.4.0 (#6340)
• Remove RaftLogReader#isEmpty (#6339)
• chore(deps): update dependency junit:junit to v4.13.2 (#6338)
• chore(deps): update dependency junit:junit to v4.13.2 (#6337)
• java-client: Fix job worker polling schedule (#6336)
• Decouple RaftLogReader from journal (#6335)
• Generate workflows with intermediate message events (#6333)
• chore(journal): improve journal module test coverage (#6330)
• Improve the stability of the replay tests (#6328)
• chore(snapshots): persist chekcksum with snapshots (#6326)
• chore(deps): update dependency org.codehaus.mojo:animal-sniffer-annotations to v1.20 (#6324)
• chore(deps): update version.testcontainers to v1.15.2 (#6322)
• Fix flaky BrokerReprocessingTest.should​ContinueWorkflowInstanceAtSeco​ndTaskAfterRestart (#6319)
• Expose further RocksDB configuration (#6312)
• chore(deps): update module spf13/cobra to v1.1.3 (#6309)
• chore(deps): update golang.org/x/oauth2 commit hash to 6667018 (#6306)
• Drop interim RaftLogWriter interface and inline it via RaftLog (#6305)
• Extract interface from RaftLogWriter and implement it via RaftLog (#6303)
• Decouple RaftLog from old journal interface (#6301)
• chore(deps): update version.jqwik to v1.4.0 (#6299)
• chore(deps): update version.elasticsearch to v6.8.14 (#6298)
• chore(deps): update docker.elastic.co/kibana/kibana-oss docker tag to v6.8.14 (#6297)
• chore(deps): update docker.elastic.co/elasticsearch/elasticsearch-oss docker tag to v6.8.14 (#6296)
• Introduce deployment distribution record (#6295)
• Write WorkflowRecord to the Stream (#6289)
• chore(deps): update module spf13/cobra to v1.1.2 (#6288)
• Restore the key generator on replay (#6285)
• chore(deps): update dependency net.java.dev.jna:jna to v5.7.0 (#6284)
• Ensure safe concurrent access to snapshot store (#6283)
• Make the StateWriter available to the command processors (#6282)
• chore(deps): update dependency io.netty:netty-bom to v4.1.59.final (#6281)
• chore(client/go): update go.mod and docker deps (#6279)
• chore(deps): update dependency org.ow2.asm:asm to v9.1 (#6274)
• chore(deps): update dependency kr.motd.maven:os-maven-plugin to v1.7.0 (#6270)
• BPMN element processors support new commands (#6267)
• Release 1.0.0 alpha1 (#6264)
• Disable WAL of RocksDB (#6261)
• Reuse transaction (#6260)
• chore(deps): update dependency org.junit:junit-bom to v5.7.1 (#6259)
• chore(zb-db): expose maxOpenFiles (#6258)
• The stream processor replays only events (#6257)
• Correctly detect if Epoll is available (#6256)
• Made RocksDB memory limit configurable (#6254)
• fix(journal): clear index mapping on reset (#6253)
• Verify that replay restores the state (#6252)
• Add basic structure for event appliers (#6250)
• chore(zb-db): introduce RocksDBConfig and made statistics optional (#6246)
• chore(deps): update golang.org/x/oauth2 commit hash to 0101308 (#6244)
• chore(broker): move RocksDB to experimental cfg (#6242)
• Generate random workflows (#6241)
• The stream processor processes only commands (#6239)
• Refactor ZeebeDB (#6238)
• chore(deps): update dependency org.apache.maven.plugins:maven-checkstyle-plugin to v3.1.2 (#6235)
• fix(broker): use correct address for binding and advertising (#6234)
• Separate mutable and immutable states (#6233)
• chore(deps): update dependency com.salesforce.servicelibs:proto-backwards-compatibility to v1.0.6 (#6229)
• chore(journal): add a new module for journal (#6216)
• Omit creating an event subscription if no event can be triggered (#6215)
• fix(clients/go): log failure to reopen stream (#6211)
• chore(deps): update golang.org/x/oauth2 commit hash to f9ce19e (#6205)
• chore(benchmarks): portable distribution script (#6193)
• fix(gateway): propagate rejections to clients without retrying (#6192)
• Remove chaos pipeline (#6181)
• chore(deps): update golang.org/x/oauth2 commit hash to af13f52 (#6169)
• chore(deps): update version.prometheus to v0.10.0 (#6165)
• Use one column family with RocksDB (#6162)
• chore(deps): update dependency org.assertj:assertj-core to v3.19.0 (#6154)
• chore(go/clients): update go version to 1.15 (#6153)
• Remove deprecated bootstrap type (#6151)
• Removes Raft#join (#6149)
• chore(atomix): remove Raft#leave (#6142)
• Fix overwrite last written position to zero (#6141)
• chore(deps): update prom/prometheus docker tag to v2.24.1 (#6138)
• chore(deps): update golang.org/x/net commit hash to 5f4716e (#6137)
• fix(gateway): fixes NPE in topology metric update (#6128)
• chore(clients/java): remove unnecessary guava dependency (#6126)
• chore(broker): set new defaults (#6123)
• chore(deps): update dependency org.mockito:mockito-junit-jupiter to v3.7.7 (#6122)
• chore(deps): update dependency org.mockito:mockito-core to v3.7.7 (#6121)
• chore(deps): update version.sbe to v1.21.0 (#6120)
• Handle INACTIVE role in gateway and clients (#6119)
• Makefile contains namespace (#6118)
• Regenerate proto file (#6117)
• chore(deps): update spring boot to v2.4.2 (#6115)
• chore(deps): update dependency com.google.errorprone:error_prone_annotations to v2.5.1 (#6114)
• chore(deps): update dependency org.sonarsource.scanner.maven:sonar-maven-plugin to v3.8.0.2131 (#6113)
• fix(broker): improve logging in broker and atomix (#6110)
• feat(clients/java): ignore changes in the impl package (#6108)
• chore(deps): update module google.golang.org/grpc to v1.35.0 (#6107)
• chore(deps): update dependency io.netty:netty-bom to v4.1.58.final (#6106)
• Remove yaml model support (#6105)
• feat(clients/go): use JSONPB to decode command's responses (#6104)
• chore(deps): update module stretchr/testify to v1.7.0 (#6103)
• chore(deps): update version.grpc to v1.35.0 (#6102)
• chore(deps): update dependency com.google.errorprone:error_prone_annotations to v2.5.0 (#6101)
• chore(deps): update golang.org/x/oauth2 commit hash to d3ed898 (#6100)
• chore(deps): update version.micrometer to v1.6.3 (#6097)
• chore(deps): update dependency io.netty:netty-bom to v4.1.57.final (#6096)
• chore(deps): update dependency io.netty:netty-tcnative-boringssl-static to v2.0.36.final (#6095)
• chore(deps): update module google.golang.org/grpc to v1.34.1 (#6094)
• java-client: Job worker polling backoff mechanism (#6093)
• Add gateway topology metrics (#6091)
• fix(monitor): ignore curator in camunda cloud (#6088)
• chore(deps): update dependency com.fasterxml.jackson:jackson-bom to v2.12.1 (#6084)
• fix(broker): detect out of cluster messages received in NettyUnicastService (#6083)
• fix(gateway): not remove stacktraces (#6081)
• Use process_files_* for file descriptor graph (#6080)
• chore(deps): update module zeebe-io/zeebe/clients/go to v0.26.0 (#6077)
• chore(deps): update prom/prometheus docker tag to v2.24.0 (#6068)
• Lower log level to debug in benchmarks (#6065)
• chore(deps): update dependency org.rocksdb:rocksdbjni to v6.15.2 (#6064)
• chore(clients/go): test zbctl JSON output as JSON (#6063)
• chore(deps): update dependency org.mockito:mockito-junit-jupiter to v3.7.0 (#6058)
• chore(deps): update dependency org.mockito:mockito-core to v3.7.0 (#6057)
• Nightly build with QA Run (#6056)
• chore(deps): update dependency com.github.spotbugs:spotbugs-maven-plugin to v4.2.0 (#6052)
• chore(deps): update golang.org/x/net commit hash to 6772e93 (#6041)
• chore(atomix): update to Kryo 5 (#6039)
• chore(deps): update dependency org.agrona:agrona to v1.9.0 (#6036)
• chore(samples): adjust examples to support connecting to cloud (#6035)
• chore(deps): update version.msgpack to v0.8.22 (#6033)
• chore(deps): update dependency org.rocksdb:rocksdbjni to v6.14.6 (#6032)
• chore(deps): update grafana/grafana docker tag to v6.7.5 (#6025)
• chore(deps): update dependency io.netty:netty-bom to v4.1.56.final (#6024)
• chore(deps): update module prometheus/client_golang to v1.9.0 (#6023)
• CI scripts/pipeline clean up (#6021)
• Fixes multi agent post verification analysis (#6020)
• chore(deps): update golang.org/x/net commit hash to 986b41b (#6019)
• fix(broker): pick latest snapshot on load when multiple snapshots exists (#6017)
• chore(deps): update version.grpc to v1.34.1 (#6013)
• chore(uptdate-tests): disable update tests (#6012)
• chore(deps): update version.guava to v30.1-jre (#6010)
• Use array access when extracting job properties from ActivateJobsResponse (#6009)
• chore(ci): add nightly build trigger (#5999)
• feat(broker): a job worker is optional (#5930)
• feat(clients/java): add capability to change ZeebeObjectMapper (#5742)
• chore(deps): update version.sbe to v1.20.4 (#5586)
• docs(readme): Updated README with ergonomic changes (#5449)