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new 26fe3a683c5 [feature][website] add blog - whats new in pulsar 2.10
(#15553)
26fe3a683c5 is described below
commit 26fe3a683c50c44712089a54cd41936eebd912df
Author: Li Li <urf...@apache.org>
AuthorDate: Thu May 12 16:27:14 2022 +0800
[feature][website] add blog - whats new in pulsar 2.10 (#15553)
* [feature][website] add blog - whats new in plusar 2.10
Signed-off-by: Li Li <urf...@apache.org>
* update
Signed-off-by: Li Li <urf...@apache.org>
* update
Signed-off-by: Li Li <urf...@apache.org>
---
...-pulsar-community-welcomes-500th-contributor.md | 2 +-
.../blog/2022-05-11-whats-new-in-pulsar-210.md | 177 +++++++++++++++++++++
2 files changed, 178 insertions(+), 1 deletion(-)
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@@ -1,7 +1,7 @@
---
title: "The Apache Pulsar Community Welcomes 500th Contributor!"
date: 2022-05-11
-author: "Matteo Merli", "Karin Landers", "Alice Bi"
+author: "Matteo Merli, Karin Landers, Alice Bi"
---
diff --git a/site2/website/blog/2022-05-11-whats-new-in-pulsar-210.md
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+---
+title: "What’s New in Apache Pulsar 2.10"
+date: 2022-05-11
+author: "Penghui Li, Dave Duggins"
+---
+
+The Apache Pulsar community releases version 2.10. 99 contributors provided
improvements and bug fixes that delivered over 800 commits.
+
+<!--truncate-->
+
+# Highlights of this release:
+
+- Pulsar provides automatic failure recovery between the primary and backup
clusters. #13316
+ - Original PIP
[#13315](https://www.google.com/url?q=https://github.com/apache/pulsar/issues/13315&sa=D&source=docs&ust=1646058957138073&usg=AOvVaw3mGki2sHW2QpIsoYf5pt3w)
+- Fewer producers needed and more efficient use of broker memory with
lazy-loading feature added to `PartitionedProducer`. #10279
+- Topic map support added with new `TableView` type using key values in
received messages.
+
+This blog documents the most noteworthy changes in this release. For the
complete list including all features, enhancements, and bug fixes, check out
the [Pulsar 2.10.1 Release
Notes](https://pulsar.apache.org/release-notes/#placeholder).
+
+# Notable bug fixes and enhancements
+***
+#### Cluster
+***
+
+##### Pulsar cluster level auto failover on client side #13316
+
+**Issue:** A Pulsar administrator must manually failover a cluster.
+
+**Resolution:** Added Pulsar cluster-level auto-failover, which automatically
and seamlessly switches from primary to one or more secondary clusters when a
failover event is detected. When the primary cluster recovers, the client
automatically switches back.
+
+##### Topic policy across multiple clusters #12517
+
+**Issue:** Some topic policies for a geo-replicated cluster affect the entire
geo-replicated cluster while some only affect the local cluster.
+
+**Resolution:** Topic policies now support cross-cluster replication.
+- For local topic policies, set the `replicateTo` property of the message to
avoid being replicated to the remote.
+- Retention supports setting global parameters.
+- Added global topic policies for `SystemTopicBasedTopicPoliciesService`.
+
+***
+#### Producer
+***
+
+##### Add lazy-loading feature to PartitionedProducer #10279
+
+**Issue:** With the number of partitions set according to the highest rate
producer, the lowest rate producer does not always need to connect to every
partition, so extra producers take up broker memory.
+
+**Resolution:** Reduced the number of producers to use broker memory more
efficiently by introducing lazy-loading for partitioned producers; also added
round-robin routing mode class to limit the number of partitions.
+
+##### [Client] Introduce chunk message ID #12403
+
+**Issue:** When sending chunked messages, the producer returns the message-id
of the last chunk, causing incorrect behaviors in some processes.
+
+**Resolution:** Introduced the new `ChunkMessage-ID` type. The chunk
message-id inherits from ``MessageIdImpl`` and adds two new methods:
``getFirstChunkMessageId`` and ``getLastChunkMessageID``. For other method
implementations, the ``lastChunkMessageID`` is called directly, which is
compatible with much of the existing business logic.
+
+***
+#### Broker
+***
+
+##### Broker extensions to allow operators of enterprise wide cluster better
control and flexibility #12536
+
+**Issue:** Operators of enterprise Pulsar cluster(s) need greater flexibility
and control to intercept broker events (including ledger writes/reads) for
template validations, observability and access control.
+
+**Resolution:**
+- Enhanced org.apache.pulsar.broker.intercept.BrokerInterceptor interface to
include additional events for tracing
+- Created a new interface
org.apache.pulsar.common.intercept.MessagePayloadProcessor to allow
interception of ledger write/read operations
+- Enhanced PulsarAdmin to give operators a control in managing super-users
+
+***
+#### Consumer
+***
+
+##### Redeliver command add epoch #10478
+
+**Issue:** Pull and redeliver operations are asynchronous, so the client
consumer may receive a new message, execute a cumulative ack based on a new
messageID, and fail to consume older messages.
+
+**Resolution:** The Pulsar client synchronizes redeliver and pull messages
operations using an incrementing epoch for the server and client consumer.
+
+##### Support pluggable entry filter in Dispatcher #12269
+
+**Issue:** Message tagging is not natively supported.
+
+**Resolution:** Implemented an entry filter framework at the broker level.
Working to support namespace and topic level in an upcoming release.
+
+##### Create init subscription before sending message to DLQ #13355
+
+**Issue:** DLQ data in unprocessed messages is removed automatically without a
data retention policy for the namespace or a subscription for the DLQ.
+
+**Resolution:** Initial subscription is now created before sending messages to
the DLQ.
+When ``deadLetterProducer`` is initialized, the consumer sets the initial
subscription according to ``DeadLetterPolicy``.
+
+##### Apply redelivery backoff policy for ack timeout #13707
+
+**Issue:** The redelivery backoff policy recently introduced in PIP 106 only
applies to the negative acknowledgment API. If ack timeout is used to trigger
the message
+redelivery instead of the negative acknowledgment API, the backoff policy is
bypassed.
+
+**Resolution:**
+- Applied message redelivery policy for ack timeout.
+- Alerted ``NegativeAckBackoff`` interface to ``RedeliveryBackoff``.
+- Exposed ``AckTimeoutRedeliveryBackoff`` in ``ConsumerBuilder``.
+- Added unit test case.
+
+Currently only the Java client is modified.
+
+##### Resolve produce chunk messages failed when topic level maxMessageSize is
set #13599
+
+**Issue:** Currently, chunk messages produce fails if topic level
maxMessageSize is set to [1].
+
+**Resolution:** Added ``isChunked`` in ``PublishContext``. Skips
the``maxMessageSize`` check if it's chunked.
+
+***
+#### Function
+***
+
+##### Pulsar Functions: Preload and release external resources #13205
+
+**Issue:** External resource initialization and release was accomplished
either manually or through use of a complicated initialization logic.
+
+**Resolution:** Introduced ``RichFunction`` interface to extend ``Function``
by providing a setup and tearDown API.
+
+***
+##### Update Authentication Interfaces to Include Async Authentication Methods
#12104
+
+**Issue:** Pulsar's current ``AuthenticationProvider`` interface only exposes
synchronous methods for authenticating a connection. To date, this has been
sufficient because we do not have any providers that rely on network calls.
However, in looking at the OAuth2.0 spec, there are some cases where network
calls are necessary to verify a token.
+
+**Resolution:**
+###### AuthenticationProvider
+- Added ``AuthenticationProvider#authenticateAsync``. Included a default
implementation that calls the authenticate method.
+- Deprecated ``AuthenticationProvider#authenticate``.
+- Added ``AuthenticationProvider#authenticateHttpRequestAsync``.
+- Deprecated ``AuthenticationProvider#authenticateHttpRequest``.
+##### AuthenticationState
+- Added ``AuthenticationState#authenticateAsync``.
+- Deprecated ``AuthenticationState#authenticate``. The preferred method is
``AuthenticationState#authenticateAsync``.
+- Deprecated ``AuthenticationState#isComplete``. This method can be avoided by
inferring authentication completeness from the result of
``AuthenticationState#authenticateAsync``.
+##### AuthenticationDataSource
+- Deprecated ``AuthenticationDataSource#authenticate``. There is no need for
an async version of this method.
+
+***
+##### Initial commit for TableView #12838
+
+**Issue:** In many use cases, applications use Pulsar consumers or readers to
fetch
+all the updates from a topic and construct a map with the latest value of each
+key for received messages. This is common when constructing a local cache of
the data. We do not offer support for This access pattern was not included in
the Pulsar client API.
+
+**Resolution:** Added new ``TableView`` type and updated the PulsarClient.
+
+***
+#### Topic
+***
+##### Support Topic metadata - PART-1 create topic with properties #12818
+
+**Issue:** Can’t store topic metadata.
+
+**Resolution:**
+- Added new storage methods in topics.java.
+- Added two new paths to REST API to reduce compatibility issues.
+
+***
+Metadata Store
+***
+##### Added Etcd MetadataStore implementation #13225
+
+**Issue:** We’re working to add metadata backends that support non-Zookeeper
implementations.
+
+**Resolution:** Added Etcd support for:
+- Batching of read/write requests
+- Session watcher
+- Lease manager
+
+
+
+
+
+
+
+
