Adding Spark 1.4.1 release

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+---
+layout: post
+title: Spark Release 1.4.1
+categories: []
+tags: []
+status: publish
+type: post
+published: true
+meta:
+  _edit_last: '4'
+  _wpas_done_all: '1'
+---
+
+Spark 1.4.1 is a maintenance release containing stability fixes. This release is based on the [branch-1.4](https://github.com/apache/spark/tree/branch-1.4) maintenance branch of Spark. We recommend all 1.4.1 users to upgrade to this stable release. 85 developers contributed to this release.
+
+To download Spark 1.4.1 visit the <a href="{{site.url}}downloads.html">downloads</a> page.
+
+### Fixes
+Spark 1.4.1 contains several bug fixes in Spark SQL and assorted fixes in other components. Some of the more important fixes are highlighted below. You can visit the [Spark issue tracker](https://issues.apache.org/jira/issues/?jql=project%20%3D%20SPARK%20AND%20fixVersion%20%3D%201.4.1%20ORDER%20BY%20priority%2C%20component) for the full list of fixes.
+
+#### MLLib
+
+ * [SPARK-8151](https://issues.apache.org/jira/browse/SPARK-8151): Pipeline components should correctly implement copy
+ * [SPARK-8468](https://issues.apache.org/jira/browse/SPARK-8468): Some metrics in RegressionEvaluator should have negative sign
+ * [SPARK-8736](https://issues.apache.org/jira/browse/SPARK-8736): GBTRegressionModel shouldn’t threshold predictions
+ * [SPARK-8563](https://issues.apache.org/jira/browse/SPARK-8563): IndexedRowMatrix.computeSVD() yields the U with wrong numCols
+
+#### PySpark
+
+ * [SPARK-8202](https://issues.apache.org/jira/browse/SPARK-8202): Infinite loop during external sort
+ * [SPARK-8573](https://issues.apache.org/jira/browse/SPARK-8573): Trigger exceptions when invalid operators are used
+ * [SPARK-8766](https://issues.apache.org/jira/browse/SPARK-8766): Support non ASCII characters in columns
+
+#### Data Sources and DataFrames
+
+ * [SPARK-8804](https://issues.apache.org/jira/browse/SPARK-8804): Order of UTF8String is not consistent with String if there is any non-ascii character in it
+ * [SPARK-8406](https://issues.apache.org/jira/browse/SPARK-8406): Race condition when writing Parquet files
+ * [SPARK-8329](https://issues.apache.org/jira/browse/SPARK-8329): DataSource options parser no longer accepts '_'
+ * [SPARK-8368](https://issues.apache.org/jira/browse/SPARK-8368): ClassNotFoundException in closure for map
+ * [SPARK-8470](https://issues.apache.org/jira/browse/SPARK-8470): MissingRequirementError for ScalaReflection on user classes
+ * [SPARK-8358](https://issues.apache.org/jira/browse/SPARK-8358): DataFrame explode with alias and * fails
+ 
+### Contributors
+The following developers contributed to this release:
+
+ * Adam Roberts -- Bug fixes in Core and tests
+ * Ai He -- Improvements in PySpark
+ * Alok Singh -- Bug fixes in Core
+ * Amey Chaugule -- Improvement in SQL
+ * Andrew Or -- Bug fixes in Core, tests, Shuffle, spark submit, and SQL; improvement in Web UI and tests
+ * Animesh Baranawal -- Improvement in SQL
+ * Ben Fradet -- Bug fixes in Streaming and Web UI
+ * Brian Lockwood -- Documentation in Core
+ * Burak Yavuz -- Test in SQL; improvements in spark submit; bug fixes in spark submit and SQL; improvement in SQL
+ * Carson Wang -- Bug fixes in Core and Web UI
+ * Cheng Hao -- Bug fixes in SQL
+ * Cheng Lian -- Documentation in Core; bug fixes in SQL
+ * Cheolsoo Park -- Improvement in SQL
+ * Chris Freeman -- Bug fixes in r
+ * Christian Kadner -- Bug fixes in SQL
+ * Cody Koeninger -- Improvements and improvement in Streaming
+ * DB Tsai -- New features in MLlib
+ * Daniel Darabos -- Bug fixes in EC2
+ * Daoyuan Wang -- Bug fixes in SQL
+ * Davies Liu -- Bug fixes in PySpark; improvement in SQL and PySpark
+ * Devaraj K -- Bug fixes in YARN
+ * Dibyendu Bhattacharya -- Bug fixes in Streaming and Web UI
+ * Favio Vazquez -- Documentation in Core and MLlib
+ * Hari Shreedharan -- Bug fixes in Streaming and Core
+ * Holden Karau -- Documentation in Core; bug fixes in sparkr, Shuffle, and MLlib
+ * Hossein Falaki -- Improvements and bug fixes in sparkr
+ * Huang Zhaowei -- Bug fixes in Streaming and YARN
+ * Jean Lyn -- Bug fixes in SQL
+ * Joseph K. Bradley -- Improvements in MLlib; bug fixes in MLlib; improvement in Core and MLlib
+ * Josh Rosen -- New features in SQL; bug fixes in scheduler and SQL; improvement in Core
+ * Kevin Conor -- Bug fixes in PySpark
+ * Kousuke Saruta -- Documentation in Core
+ * Lars Francke -- Documentation in Core
+ * Lee -- Bug fixes in MLlib
+ * Liang-Chi Hsieh -- Improvements in SQL; bug fixes in MLlib and SQL
+ * Lianhui Wang -- Bug fixes in Shuffle
+ * Luca Martinetti -- Documentation in Core
+ * Manoj Kumar -- Improvements in SQL; bug fixes in MLlib and PySpark
+ * Marcelo Vanzin -- Improvements in Core; bug fixes in Core and Web UI
+ * Mark Smith -- Bug fixes in EC2
+ * Michael Armbrust -- Bug fixes in SQL
+ * Mike Dusenberry -- Improvements in PySpark, Core, SQL, and Streaming
+ * Moussa Taifi -- Documentation in Core
+ * Nathan Howell -- Bug fixes in SQL
+ * Navis Ryu -- Bug fixes in SQL
+ * Neelesh Srinivas Salian -- Documentation in Core and YARN
+ * Oleksiy Dyagilev -- Bug fixes in Core and MLlib
+ * Paavo Parkkinen -- Bug fixes in Streaming and MLlib
+ * Patrick Wendell -- Improvements in Core
+ * Punya Biswal -- Bug fixes in Core
+ * Qian Huang -- New features in sparkr
+ * Radek Ostrowski -- Documentation in Core
+ * Ram Sriharsha -- New features in MLlib and PySpark
+ * Rekha Joshi -- Improvements in Web UI
+ * Reynold Xin -- Bug fixes and improvement in SQL
+ * Rosstin Murphy -- Documentation in Core
+ * Ryan Williams -- Bug fixes in Core
+ * Saisai Shao -- Bug fixes in Core and Streaming
+ * Scott Taylor -- Test in PySpark
+ * Sean Owen -- Improvements and bug fixes in Core
+ * Sephiroth Lin -- Improvements in YARN
+ * Shiming Fei -- Bug fixes in Core
+ * Shivaram Venkataraman -- Improvements in Core, EC2, and sparkr; bug fixes in sparkr and EC2
+ * Shixiong Zhu -- Test in Streaming, tests, and Core; improvements in Streaming and Core; bug fixes in Core, tests, PySpark, and Streaming
+ * Simon Hafner -- Bug fixes in EC2
+ * Sun Rui -- Bug fixes in Core and sparkr
+ * Tao Li -- Bug fixes in YARN
+ * Tathagata Das -- Improvements in Core and Streaming; bug fixes in Core
+ * Ted Blackman -- Bug fixes in PySpark
+ * Ted Yu -- Bug fixes in SQL
+ * Tim Ellison -- Bug fixes in Core
+ * Timothy Chen -- Bug fixes in Web UI and Mesos
+ * Tingjun Xu -- Improvements in Core
+ * Tom Graves -- Bug fixes in Core
+ * Vinod K C -- Improvements and bug fixes in SQL
+ * Vyacheslav Baranov -- Bug fixes in Core
+ * Wang Tao -- Bug fixes in Core and YARN
+ * Wenchen Fan -- Improvement in SQL
+ * Xiangrui Meng -- Bug fixes in MLlib
+ * Yanbo Liang -- Improvements in Core, MLlib, and PySpark
+ * Yin Huai -- Improvements in Core, tests, and SQL; bug fixes in tests and SQL; improvement in tests and SQL
+ * Yu ISHIKAWA -- Improvements in PySpark; improvement in sparkr
+ * Yuhao Yang -- Bug fixes in MLlib
+ * Yuming Wang -- Github integration in Web UI
+ * Yuri Saito -- Bug fixes in PySpark
+
+_Thanks to everyone who contributed!_
+