commit | ca4cad22968e1a2f88fa0ec262c1088812e3d251 | [log] [tgz] |
---|---|---|
author | jerryshao <sshao@hortonworks.com> | Fri May 25 09:36:03 2018 +0800 |
committer | jerryshao <sshao@hortonworks.com> | Fri May 25 09:36:03 2018 +0800 |
tree | 95cb8da0bb339ea6413fd33b86640e7ad0b94ac4 | |
parent | 6f1756cffbde5c58075dc2d2dc8a7a8ea51516fe [diff] |
[LIVY-472][SERVER] Improve the logs for fail-to-create session ## What changes were proposed in this pull request? Livy currently doesn't give a very clear log about the fail-to-create session, it only says that session related app tag cannot be found in RM, but doesn't tell user how to search and get the true root cause. So here change the logs to make it more clear. ## How was this patch tested? Local verification. Author: jerryshao <sshao@hortonworks.com> Closes #96 from jerryshao/LIVY-472.
Apache Livy is an open source REST interface for interacting with Apache Spark from anywhere. It supports executing snippets of code or programs in a Spark context that runs locally or in Apache Hadoop YARN.
Pull requests are welcomed! But before you begin, please check out the Contributing section on the Community page of our website.
Guides and documentation on getting started using Livy, example code snippets, and Livy API documentation can be found at livy.incubator.apache.org.
To build Livy, you will need:
Debian/Ubuntu:
maven
package or maven3 tarball)Redhat/CentOS:
maven
package or maven3 tarball)MacOS:
Required python packages for building Livy:
To run Livy, you will also need a Spark installation. You can get Spark releases at https://spark.apache.org/downloads.html.
Livy requires at least Spark 1.6 and supports both Scala 2.10 and 2.11 builds of Spark, Livy will automatically pick repl dependencies through detecting the Scala version of Spark.
Livy also supports Spark 2.0+ for both interactive and batch submission, you could seamlessly switch to different versions of Spark through SPARK_HOME
configuration, without needing to rebuild Livy.
Livy is built using Apache Maven. To check out and build Livy, run:
git clone https://github.com/apache/incubator-livy.git cd livy mvn package
By default Livy is built against Apache Spark 1.6.2, but the version of Spark used when running Livy does not need to match the version used to build Livy. Livy internally uses reflection to mitigate the gaps between different Spark versions, also Livy package itself does not contain a Spark distribution, so it will work with any supported version of Spark (Spark 1.6+) without needing to rebuild against specific version of Spark.