| commit | 19a2b58c32d56060a8167a2ad69bb942083ba4c1 | [log] [tgz] |
|---|---|---|
| author | Abdullah Alamoudi <bamousaa@gmail.com> | Sun Nov 12 17:21:34 2017 -0800 |
| committer | abdullah alamoudi <bamousaa@gmail.com> | Sun Nov 12 22:19:43 2017 -0800 |
| tree | 0dac03698680bcd7e9db33cf69179303b5cf8ce5 | |
| parent | ed4b04680224ce9209bf417247d6c0424c4dfc3d [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>
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.
To build AsterixDB from source, you should have a platform with the following:
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
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.