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zhaijia pushed a commit to branch branch-4.6
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The following commit(s) were added to refs/heads/branch-4.6 by this push:
new 24c6256 ISSUE #695: add release notes for 4.6.0
24c6256 is described below
commit 24c6256b1b4cb89c30ead1a30518c02493a0bc5f
Author: Jia Zhai <[email protected]>
AuthorDate: Thu Nov 30 13:35:29 2017 +0800
ISSUE #695: add release notes for 4.6.0
Descriptions of the changes in this PR:
add release notes for 4.6.0.
Author: Jia Zhai <[email protected]>
Reviewers: Sijie Guo <[email protected]>
This closes #759 from zhaijack/issue-695, closes #695
---
site/docs/4.6.0/overview/releaseNotes.md | 61 ++++++++++++++++++++++++++++++++
1 file changed, 61 insertions(+)
diff --git a/site/docs/4.6.0/overview/releaseNotes.md
b/site/docs/4.6.0/overview/releaseNotes.md
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+---
+title: Apache BookKeeper 4.6.0 Release Notes
+---
+
+This is the seventh release of BookKeeper as an Apache Top Level Project!
+
+The 4.6.0 release incorporates new fixes, improvements, and features since
previous major release 4.5.0.
+
+Apache BookKeeper users are encouraged to upgrade to 4.6.0. The technical
details of this release are summarized
+below.
+
+## Highlights
+
+The main features in 4.6.0 cover are around following areas:
+- Dependencies Upgrade
+- Bookie enhancement
+- BookKeeper Admin REST API
+- New BookKeeper API
+- Performance improvement
+- Deployment or Ease of use
+
+### Dependencies Upgrade
+
+- Upgrade Protobuf to `3.4`.
+
+### Bookie enhancement
+
+- Persistable bookie status.
+ - Prior to this release, bookie status was transient. It is a bit hard for
management tooling. This feature adds persistable bookies status. See
[Issue-265](https://github.com/apache/bookkeeper/issues/265) for more details.
+
+- Introduce Bookie Discovery Interface. Prior to this release, bookkeeper
client only provides interfaces for ledger metadata management. It doesn't
provide any interface for service discovery part. This feature introduces
bookie discovery interface, so it allows plugging in different service
discovery backends for bookkeeper.
+ - Introduce Bookie Registration Manager for bookie server, see
[Issue-662](https://github.com/apache/bookkeeper/issues/662) for more details.
+ - Introduce registration client for bookkeeper client, see
[Issue-666](https://github.com/apache/bookkeeper/issues/666) for more details.
+
+- Lifecycle components for managing components in bookie server.
+ - Introduce lifecycle component for each service component, which includes
"stats provider", "auto recovery", "http endpoint", and "bookie server(both
storage and netty server)", to run these components in a clear way. See
[Issue-508](https://github.com/apache/bookkeeper/issues/508) and
[Issue-547](https://github.com/apache/bookkeeper/issues/547) for more details.
+
+- Make bookie recovery work with recovering multiple bookies.
+ - Make recovery tool work with multiple bookies, so that one call could
recover multiple bookies. See
[Issue-612](https://github.com/apache/bookkeeper/issues/612) for more details.
+
+### BookKeeper Admin REST API
+
+- Introduce a bookkeeper admin endpoint for operations to interact and
administer the bookkeeper cluster using REST API. see
[PR-278](https://github.com/apache/bookkeeper/pull/278),
[Issue-520](https://github.com/apache/bookkeeper/issues/520), and
[Issue-674](https://github.com/apache/bookkeeper/issues/674) for more details.
+
+### New BookKeeper API
+
+- New Fluent Style API.
+ - A brand new API to manage ledgers using the Builder pattern, and new
interfaces to make it clear operations on ledgers, like WriteHandle and
ReadHandle, are provided in this release. See
[Issue-506](https://github.com/apache/bookkeeper/issues/506),
[Issue-673](https://github.com/apache/bookkeeper/issues/673) and
[Issue-550](https://github.com/apache/bookkeeper/issues/550) for more details
+
+### Performance improvement
+- Use ByteBuf in multiple places to avoid unnecessary memory allocation and
reduce the garbage produced in JVM. See
[PR-640](https://github.com/apache/bookkeeper/pull/640) for more details.
+
+- Separate the FileInfo cache into write and read cache. It avoids catchup
reads impact tailing reads and writes. See
[PR-513](https://github.com/apache/bookkeeper/pull/513) for more details.
+
+### Deployment or Ease of use
+- Deployment BookKeeper on K8s.
+ - Provide yaml files to run BookKeeper on Kubernetes using both StatefulSets
and DaemonSet. See [Issue-337](https://github.com/apache/bookkeeper/issues/337)
and [Issue-681](https://github.com/apache/bookkeeper/issues/681)for more
details.
+
+## Full list of changes
+
+-
[https://github.com/apache/bookkeeper/milestone/2](https://github.com/apache/bookkeeper/milestone/2)
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