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From granthe...@apache.org
Subject kudu git commit: Add announcement blog post for 1.7.0
Date Fri, 23 Mar 2018 19:25:56 GMT
Repository: kudu
Updated Branches:
  refs/heads/gh-pages 7bc5c1253 -> 4cdc8268c

Add announcement blog post for 1.7.0

Change-Id: Ib674a62147b2996e6bb684fa8e295083d58b20f2
Reviewed-on: http://gerrit.cloudera.org:8080/9789
Reviewed-by: Adar Dembo <adar@cloudera.com>
Tested-by: Grant Henke <granthenke@apache.org>

Project: http://git-wip-us.apache.org/repos/asf/kudu/repo
Commit: http://git-wip-us.apache.org/repos/asf/kudu/commit/4cdc8268
Tree: http://git-wip-us.apache.org/repos/asf/kudu/tree/4cdc8268
Diff: http://git-wip-us.apache.org/repos/asf/kudu/diff/4cdc8268

Branch: refs/heads/gh-pages
Commit: 4cdc8268ce58a2875d26e80a45001f8cf81635c7
Parents: 7bc5c12
Author: Grant Henke <granthenke@apache.org>
Authored: Fri Mar 23 13:30:13 2018 -0500
Committer: Grant Henke <granthenke@apache.org>
Committed: Fri Mar 23 19:25:39 2018 +0000

 _posts/2018-03-23-apache-kudu-1-7-0-released.md | 70 ++++++++++++++++++++
 1 file changed, 70 insertions(+)

diff --git a/_posts/2018-03-23-apache-kudu-1-7-0-released.md b/_posts/2018-03-23-apache-kudu-1-7-0-released.md
new file mode 100644
index 0000000..db866ae
--- /dev/null
+++ b/_posts/2018-03-23-apache-kudu-1-7-0-released.md
@@ -0,0 +1,70 @@
+layout: post
+title: Apache Kudu 1.7.0 released
+author: Grant Henke
+The Apache Kudu team is happy to announce the release of Kudu 1.7.0!
+Apache Kudu 1.7.0 is a minor release that offers new features, performance
+optimizations, incremental improvements, and bug fixes.
+Release highlights:
+1. Kudu now supports the decimal column type. The decimal type is a numeric
+   data type with fixed scale and precision suitable for financial and other
+   arithmetic calculations where the imprecise representation and rounding
+   behavior of float and double make those types impractical. The decimal type
+   is also useful for integers larger than int64 and cases with fractional values
+   in a primary key. See [Decimal Type](/releases/1.7.0/docs/schema_design.html#decimal)
+   for more details.
+2. The strategy Kudu uses for automatically healing tablets which have lost a
+   replica due to server or disk failures has been improved. The new re-replication
+   strategy, or replica management scheme, first adds a replacement tablet replica
+   before evicting the failed one.
+3. A new scan read mode READ_YOUR_WRITES. Users can specify READ_YOUR_WRITES when
+   creating a new scanner in C++, Java and Python clients. If this mode is used,
+   the client will perform a read such that it follows all previously known writes
+   and reads from this client. Reads in this mode ensure read-your-writes and
+   read-your-reads session guarantees, while minimizing latency caused by waiting
+   for outstanding write transactions to complete. Note that this is still an
+   experimental feature which may be stabilized in future releases.
+4. The tablet server web UI scans dashboard (/scans) has been improved with several
+   new features, including: showing the most recently completed scans, a pseudo-SQL
+   scan descriptor that concisely shows the selected columns and applied predicates,
+   and more complete and better documented scan statistics.
+5. Kudu daemons now expose a web page /stacks which dumps the current stack trace of
+   every thread running in the server. This information can be helpful when diagnosing
+   performance issues.
+6. By default, each tablet replica will now stripe data blocks across 3 data directories
+   instead of all data directories. This decreases the likelihood that any given tablet
+   will be affected in the event of a single disk failure.
+7. The Java client now uses a predefined prioritized list of TLS ciphers when
+   establishing an encrypted connection to Kudu servers. This cipher list matches the
+   list of ciphers preferred for server-to-server communication and ensures that the
+   most efficient and secure ciphers are preferred. When the Kudu client is running on
+   Java 8 or newer, this provides a substantial speed-up to read and write performance.
+8. The performance of inserting rows containing many string or binary columns has been
+   improved, especially in the case of highly concurrent write workloads.
+9. The Java client will now automatically attempt to re-acquire Kerberos credentials
+   from the ticket cache when the prior credentials are about to expire. This allows
+   client instances to persist longer than the expiration time of a single Kerberos
+   ticket so long as some other process renews the credentials in the ticket cache.
+For more details, and the complete list of changes in Kudu 1.7.0, please see
+the [Kudu 1.7.0 release notes](/releases/1.7.0/docs/release_notes.html).
+The Apache Kudu project only publishes source code releases. To build Kudu
+1.7.0, follow these steps:
+1. Download the [Kudu 1.7.0 source release](/releases/1.7.0/).
+2. Follow the instructions in the documentation to
+   [build Kudu 1.7.0 from source](/releases/1.7.0/docs/installation.html#build_from_source).
+For your convenience, binary JAR files for the Kudu Java client library, Spark
+DataSource, Flume sink, and other Java integrations are published to the ASF
+Maven repository and are
+[now available](https://search.maven.org/#search%7Cga%7C1%7Cg%3A%22org.apache.kudu%22%20AND%20v%3A%221.7.0%22).

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