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apache / asterixdb / refs/heads/release-0.9.3-pre-rc
commit19a2b58c32d56060a8167a2ad69bb942083ba4c1[log] [tgz]
authorAbdullah Alamoudi <bamousaa@gmail.com>Sun Nov 12 17:21:34 2017 -0800
committerabdullah alamoudi <bamousaa@gmail.com>Sun Nov 12 22:19:43 2017 -0800
tree0dac03698680bcd7e9db33cf69179303b5cf8ce5
parented4b04680224ce9209bf417247d6c0424c4dfc3d [diff]
[NO ISSUE][TX] Fix DatasetLock for Multiple Index Builds

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

details:
- The mechanism used for allowing multiple concurrent index
  builds does not work if the first index build finishes
  before other index builds. It relied on a write lock
  obtained by the first index builder and released by
  the last index builder. This is not allowed when using
  ReentrantReadWriteLock and will lead to an
  IllegalMonitorStateException since the last thread to exit
  did not hold the lock.
- Potential Deadlock between modify and exclusive modify can
  happen when an exclusive modify attempts to upgrade the
  lock to write lock while the modify lock waits for the
  exclusive lock to release. This has been fixed too.
- Test cases were added.

Change-Id: I3bea3ff2075d952ab13402b0c445c464b431c0f5
Reviewed-on: https://asterix-gerrit.ics.uci.edu/2144
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Contrib: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Michael Blow <mblow@apache.org>
3 files changed
tree: 0dac03698680bcd7e9db33cf69179303b5cf8ce5
  1. asterixdb/
  2. hyracks-fullstack/
  3. .gitattributes
  4. .gitignore
  5. build.xml
  6. pom.xml
  7. README.md
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