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Apache Pulsar 2.7.0

2020-11-25​

The following lists fixes and enhancements in the 2.7.0 release.

Transactions​

  • Implement the Transaction Buffer Client #6544
  • Support produce messages with transaction and commit transaction #7552
  • Support consume transaction messages #7781 #7833
  • Message acknowledgment with transaction #7856 #8007
  • Support transaction abort on partition #7953
  • Support transaction abort on subscription #7979
  • Handle pending ack at the client side #8037
  • Pending ack state implementation #8426
  • Support get reponse for message acknowledge #8161
  • Refactor the transaction buffer implementation #8291 #8347
  • Transaction marker deletion #8318
  • Support produce messages with transaction in batch #8415
  • Register transaction metadata before send or ack messages #8493
  • Expose transaction interface #8505
  • Guarantee transaction metadata handlers connected #8563
  • Add the batch size in transaction ack command #8659
  • Implement the Transaction Log #8658

Topic policy​

  • Support setting message TTL on topic level #7738
  • Support setting retention on topic level #7747
  • Support setting delayed delivery policy on topic level #7784
  • Support setting max unacked message per subscription on topic level #7802
  • Support setting persistence policie on topic level #7817
  • Support setting max unacked messages per consumer on topic level #7818
  • Support setting deduplication policy on topic level #7821
  • Support setting message dispatch rate on topic level #7863)
  • Support setting compaction threshold on topic level #7881
  • Support setting offload policy on topic level #7883
  • Support setting max producers for a topic #7914
  • Support setting max consumers for a topic #7968
  • Support setting publish rate limitation for a topic #7948
  • Support setting inactive topic policy on topic level #7986
  • Support setting subscribe rate for a topic #7991
  • Support setting max consumers per subscription on topic level #8003
  • Support setting subscription dispatch rate on topic level #8087
  • Support setting deduplication snapshot interval on topic level #8552

Broker​

  • Upgrade BookKeeper version to 4.12.0 #8447
  • Capture the add entry latency of managed-ledger #4419
  • Keep max-concurrent http web-request configurable #7250
  • Perform the unload in background after bundle split #7387
  • Cleanup already deleted namespace topics when remove cluster #7473
  • Support partitioned topics in the Reader #7518
  • Support partitioned topic lookup #7605
  • Make OrderedExecutor threads number configurable #7765
  • Add config to lazily recover cursors when recovering a managed ledger #7858
  • Make BookKeeper throttle configurable #7901
  • Report compacted topic ledger info when calling get internal stats #7988
  • Add broker config to enforce producer to publish encrypted message #8055
  • Expose ensemble placement policy in bookkeeper.conf #8210
  • Support limit topic publish rate at the broker level #8235
  • Support limit the max tenants of the Pulsar cluster #8261
  • Support limit the max namespaces per tenant #8267
  • Support limit max subscriptions per topic #8289
  • Added metrics for topic lookups operations #8272
  • Added REST handler for broker ready probe #8303
  • Configure namespace anti-affinity in local policies #8349
  • Handle hash collision in KeyShared subscription mode #8396
  • Configure maxMsgReplDelayInSeconds for each repl-cluster #8409
  • Support taking de-duplication snapshots based on time #8474
  • Support namespace-level duplication snapshot #8506
  • Expose consumer names after the mark delete position for the Key_Shared subscription #8545
  • Close topics that remain fenced forcefully #8561

Functions​

  • Separate out FunctionMetadata related helper functions #7146
  • Attach names for all producers/readers in worker service #7165
  • Add support to read compacted topic #7193
  • Re-work Function MetaDataManager to make all metadata writes only by the leader #7255
  • Fix leader/scheduler assignment processing lag problem #7237
  • Set source spec's negativeacktimeout as well as timeout #7337
  • Add an endpoint to check whether function worker service is initialized #7350
  • Functions metadata compaction #7377
  • Implement rebalance mechanism #7388
  • Improve security setting #7424
  • Allow function rebalance to be run periodically #7449
  • Log scheduler stats for Pulsar Functions #7474
  • Add BatchPushSource interface #7493
  • Rejigger contract between LeaderService and rest of components #7520
  • Allow null consume in BatchPushSource #7573
  • Add readiness api for the worker leader #7601
  • Reduce in the leader init time in Pulsar Functions #7611
  • Export Function worker internal stats via Prometheus #7641
  • Allow ability to specify retain key ordering in functions #7647
  • Added ability to specify runtime for localrunner #7681
  • Add additional metrics for Pulsar Function Worker #7685
  • Use available cores for io thread processing #7689
  • Added ability to specify producer config for functions and sources #7721
  • Allow the option to make producers thread local #7764
  • Add ability for BatchPushSource to notify errors asynchronously #7865
  • Allow ability to specify sub position in functions #7891
  • Add hostname to consumer/producer properties in Pulsar Functions #7897
  • Allow specifying state storage url for Source/Sink localrun #7930
  • Enable function worker JVM metrics to be reported via Prometheus #8097
  • Add ability to specify EnvironmentBasedSecretsProvider in LocalRunner #8098
  • Added ability to specify secrets class in localrunner builder #8127
  • Add access to the current message from the function context #8290
  • Enable e2e encryption for Pulsar Function #8432
  • Support key_based batch builder for functions and sources #8523
  • Refactor Context and State API to allow plugging different state store implementations #8537

IO connectors​

  • [HDFS] Add config to create sub directory from current time #7771
  • [NSQ] Add NSQ Source #8372

Schema​

  • Add java8 date and time type to primitive schemas #7874
  • Native protobuf schema support #7874
  • Refactor multi-version schema reader #8464

Tiered storage​

  • Support Azure BlobStore offload #8436

Clients​

  • [cgo] Remove CGO client from repo #8514

Admin​

  • [Pulsar Admin] support config request timeout #7698
  • [Pulsar Admin] Ensure deleting a partitioned-topic on a non existing namespace returns 404 #7777
  • [Pulsar Admin] Added support to force deleting namespace #7993
  • [Pulsar Admin] Allow to get ledger metadata along with topic stats-internal #8180
  • [Pulsar Admin] Support remove namespace level offload policy #8446
  • [Pulsar Admin] Suport get list of bundles under a namespace #8450
  • [Pulsar Admin] Add ability to examine specific message by position relative to earliest or latest message #8494
  • [Pulsar Admin] Add key-shared consumer range to internal topic stats #8567

Fixes​

  • [Broker] Prevent redirection of lookup requests from looping #7200
  • [Broker] Ensure that admin operations are gated by super user check #7226
  • [Broker] Fix race condition when delete topic forcelly #7356
  • [Tiered Storage] Fix NPE when offload data to GCS #7400
  • [Function]Fix race condition in which exitFuture in FunctionAssignmentTailer never gets completed even though the tailer thread has exited #7351
  • [Function] Various fixes and optimizations for processing assignments in function worker #7338
  • [Function] Fix deadlock between create function and leader initialization #7508
  • [Pulsar Admin] Fix exceptions being ignored in PulsarAdmin #7510
  • [Broker] Fix the nondurable consumer can not specify the initial position #7702
  • [Broker] Fixed race condition on deleting topic with active readers #7715
  • [Broker] Avoid ConcurrentModificationException of LocalBrokerData #7729
  • [Pulsar Proxy] Fix memory leak with debug log-level #7963
  • [Broker] Double check from zookeeper if availableBrokers is empty for discovery service #7975
  • [Broker] Fix broker-ml bucket stats show high metrics rate #8218
  • [Broker] Fix incorrect configuration for zk-cache expire time #8302
  • [Function] Fix returned status code for get function state when state does not exist #8437
  • [Broker] Fix the residual of inactive partitioned-topic cleaning #8442
  • [Pulsar Proxy] Fix request.getContentLength() to return 0 if it is less than 0 #8448
  • [Broker] Fix race condition when calling acknowledgementWasProcessed() #8499
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