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asterix-gerrit.ics.uci.edu / asterixdb / e060d5cfe8138339475a4ac69e38154e81eaa553
commite060d5cfe8138339475a4ac69e38154e81eaa553[log] [tgz]
authorluochen <cluo8@uci.edu>Wed Feb 27 20:44:59 2019 -0800
committerLuo Chen <cluo8@uci.edu>Sat Mar 02 17:44:29 2019 -0800
tree1ec54a9b4c248d72f083e168db2d7b2fc2a73086
parentaed96f0b524998469e27d1ed40cb97d79b5ed2f8 [diff]
[ASTERIXDB-2522][TX] Skip WAIT record during lock conflicts

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

Details:
- A small optimization to our deadlock-free locking potocol by skipping
the WAIT record. Once the partial frame has been flushed and previous
records are committed, the locks held by the write thread will
eventually be released by the log flusher thread. There is no need to
force the writer thread to wait for the log flusher thread.

Change-Id: I6ef3979d6393d45a6b7b2eb5f09f147299b5cd9f
Reviewed-on: https://asterix-gerrit.ics.uci.edu/3232
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: Murtadha Hubail <mhubail@apache.org>
1 file changed
tree: 1ec54a9b4c248d72f083e168db2d7b2fc2a73086
  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/apache-asterixdb-*-SNAPSHOT
  $./opt/local/bin/start-sample-cluster.sh

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

      http://localhost:19001

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

Documentation

Community support