LICENSE

                                 Apache License
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                        http://www.apache.org/licenses/

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   APACHE DRUID (INCUBATING) SUBCOMPONENTS:

   Apache Druid (incubating) includes a number of subcomponents with
   separate copyright notices and license terms. Your use of the source
   code for these subcomponents is subject to the terms and
   conditions of the following licenses.


Apache License version 2.0
================================

SOURCE/JAVA-CORE
    This product contains conjunctive normal form conversion code, a variance aggregator algorithm, and Bloom filter
     adapted from Apache Hive.
      * processing/src/main/java/org/apache/druid/segment/filter/Filters.java
      * extensions-core/stats/src/main/java/io/druid/query/aggregation/variance/VarianceAggregatorCollector.java
      * extensions-core/druid-bloom-filter/src/main/java/org/apache/druid/query/filter/BloomKFilter.java

    This product contains variable length long deserialization code adapted from Apache Lucene.
      * processing/src/main/java/org/apache/druid/segment/data/VSizeLongSerde.java

    This product contains SQL query planning code adapted from Apache Calcite.
      * sql/src/main/java/org/apache/druid/sql/calcite/

    This product contains Kerberos authentication code adapted from Apache Hadoop.
      * extensions-core/druid-kerberos/src/main/java/org/apache/druid/security/kerberos/

    This product contains a modified version of the java-alphanum library,
     copyright Andrew Duffy (https://github.com/amjjd/java-alphanum).
      * processing/src/main/java/org/apache/druid/query/ordering/StringComparators.java

    This product contains a modified version of the Metamarkets java-util library,
     copyright Metamarkets Group Inc. (https://github.com/metamx/java-util).
      * java-util/

    This product contains a modified version of the Metamarkets bytebuffer-collections library,
     copyright Metamarkets Group Inc. (https://github.com/metamx/bytebuffer-collections)
      * processing/src/main/java/org/apache/druid/collections/

    This product contains a modified version of the Metamarkets extendedset library,
     copyright Metamarkets Group Inc. (https://github.com/metamx/extendedset)
      * extendedset/

    This product contains a modified version of the CONCISE (COmpressed 'N' Composable Integer SEt) library,
     copyright Alessandro Colantonio (https://sourceforge.net/projects/concise/), extending the functionality of
     ConciseSet to use IntBuffers.
      * extendedset/src/main/java/org/apache/druid/extendedset/intset/

    This product contains modified portions of the Guava library,
     copyright The Guava Authors (https://github.com/google/guava).
      Closer class:
      * core/src/main/java/org/apache/druid/java/util/common/io/Closer.java
      Splitter.splitToList() method:
      * core/src/main/java/org/apache/druid/java/util/common/parsers/DelimitedParser.java
      DirectExecutorService class:
      * core/src/main/java/org/apache/druid/java/util/common/concurrent/DirectExecutorService.java

    This product contains modified versions of the Dockerfile, scripts, and related configuration files
     used for building SequenceIQ's Hadoop Docker image, copyright SequenceIQ, Inc. (https://github.com/sequenceiq/hadoop-docker/)
      * examples/quickstart/tutorial/hadoop/docker/

    This product contains fixed bins histogram percentile computation code adapted from Netflix Spectator,
     copyright Netflix, Inc. (https://github.com/Netflix/spectator)
      * extensions-core/histogram/src/main/java/org/apache/druid/query/aggregation/histogram/FixedBucketsHistogram.java

    This product contains ByteBuffer unmapping code adapted from Apache Kafka
      * core/src/main/java/org/apache/druid/java/util/common/ByteBufferUtils.java

    This product contains s3 directory place holder check code adapted from JetS3t (https://bitbucket.org/jmurty/jets3t/wiki/Home).
      * extensions-core/s3-extensions/src/main/java/org/apache/druid/storage/s3/S3Utils.java

    This product contains lpad and rpad methods adapted from Apache Flink.
      * core/src/main/java/org/apache/druid/java/util/common/StringUtils.java


MIT License
================================

SOURCE/WEB-CONSOLE
    This product bundles jQuery version 1.11.0, copyright jQuery Foundation, Inc.,
     which is available under an MIT license. For details, see licenses/src/jquery.MIT.

    This product bundles sizzle.js by way of jQuery version 1.11.0, copyright jQuery Foundation and other contributors
     which is available under an MIT license. For details, see licenses/src/sizzle.MIT.

    This product bundles jQuery UI version 1.9.2, copyright jQuery Foundation and other contributors,
     which is available under an MIT license. For details, see licenses/src/jquery-ui.MIT.

    This product bundles underscore version 1.2.2, copyright Jeremy Ashkenas, DocumentCloud,
     which is available under an MIT license. For details, see licenses/src/underscore.MIT.


BSD-3-Clause License
================================

SOURCE/WEB-CONSOLE
    This product bundles demo_table.css and jquery.dataTables.js from DataTables version 1.8.2, copyright Allan Jardine.,
     which is available under a BSD-3-Clause License. For details, see licenses/src/datatables.BSD3.

SOURCE/JAVA-CORE
    This product contains Porter stemmer adapted from a Javascript Porter Stemmer (https://github.com/kristopolous/Porter-Stemmer)
     which is available under a BSD-3-Clause License.
      * processing/src/test/java/org/apache/druid/query/extraction/JavaScriptExtractionFnTest.java

Public Domain
================================

SOURCE/JAVA-CORE
    This product uses a smear function adapted from MurmurHash3, written by Austin Appleby who has placed
     MurmurHash3 in the public domain (https://github.com/aappleby/smhasher/blob/master/src/MurmurHash3.cpp).
      * processing/src/main/java/org/apache/druid/query/groupby/epinephelinae/Groupers.java