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asterix-gerrit.ics.uci.edu / asterixdb / d954c47c1588d04967ffe61f8dcb19e9815970b2
commitd954c47c1588d04967ffe61f8dcb19e9815970b2[log] [tgz]
authorXikui Wang <xkkwww@gmail.com>Thu Jun 21 20:02:15 2018 -0700
committerXikui Wang <xkkwww@gmail.com>Tue Jun 26 14:23:58 2018 -0700
tree8dfbe035c9a020a68c635a5b23c7905661c76ed0
parent07b40283846e83df1a49c8843783297c71214ebe [diff]
[NO ISSUE][COMP] Prevent broadcast hint changes left-outer-join semantic

- user model changes: no
- storage format changes: no
- interface changes: no

Details:
The current way of handling broadcast hint can cause a problem in a
certain case. When we have a subquery containing join, the inline
subplan rule will transform it into a left-outer-join. If the join in
the subquery has a broadcast hint and the broadcast side is left, then
the JoinUtils will switch the two branches blindly which can break the
semantic of the left-outer-join.

Change-Id: I522b5f1edf35a1c46f2e2ef1b265049d3c18a575
Reviewed-on: https://asterix-gerrit.ics.uci.edu/2721
Sonar-Qube: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Contrib: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Dmitry Lychagin <dmitry.lychagin@couchbase.com>
3 files changed
tree: 8dfbe035c9a020a68c635a5b23c7905661c76ed0
  1. .gitattributes
  2. .gitignore
  3. README.md
  4. asterixdb/
  5. build.xml
  6. hyracks-fullstack/
  7. pom.xml
README.md

What is AsterixDB?

AsterixDB is a BDMS (Big Data Management System) with a rich feature set that sets it apart from other Big Data platforms. Its feature set makes it well-suited to modern needs such as web data warehousing and social data storage and analysis. AsterixDB has:

  • Data model
    A semistructured NoSQL style data model (ADM) resulting from extending JSON with object database ideas

  • Query languages
    Two expressive and declarative query languages (SQL++ and AQL) that support a broad range of queries and analysis over semistructured data

  • Scalability
    A parallel runtime query execution engine, Apache Hyracks, that has been scale-tested on up to 1000+ cores and 500+ disks

  • Native storage
    Partitioned LSM-based data storage and indexing to support efficient ingestion and management of semistructured data

  • External storage
    Support for query access to externally stored data (e.g., data in HDFS) as well as to data stored natively by AsterixDB

  • Data types
    A rich set of primitive data types, including spatial and temporal data in addition to integer, floating point, and textual data

  • Indexing
    Secondary indexing options that include B+ trees, R trees, and inverted keyword (exact and fuzzy) index types

  • Transactions
    Basic transactional (concurrency and recovery) capabilities akin to those of a NoSQL store

Learn more about AsterixDB at its website.

Build from source

To build AsterixDB from source, you should have a platform with the following:

  • A Unix-ish environment (Linux, OS X, will all do).
  • git
  • Maven 3.3.9 or newer.
  • Oracle JDK 8 or newer.

Instructions for building the master:

  • Checkout AsterixDB master:

      $git clone https://github.com/apache/asterixdb.git

  • Build AsterixDB master:

      $cd asterixdb
  $mvn clean package -DskipTests

Run the build on your machine

Here are steps to get AsterixDB running on your local machine:

  • Start a single-machine AsterixDB instance:

      $cd asterixdb/asterix-server/target/asterix-server-*-binary-assembly/
  $./opt/local/bin/start-sample-cluster.sh

  • Good to go and run queries in your browser at:

      http://localhost:19001

  • Read more documentations to learn the data model, query language, and how to create a cluster instance.

Documentation

Community support