remove snappy support

relates to elastic#2459

Author: kimchy

pom.xml

@@ -219,14 +219,6 @@
  <optional>true</optional>
  </dependency>
 
- <dependency>
- <groupId>org.xerial.snappy</groupId>
- <artifactId>snappy-java</artifactId>
- <version>1.0.4.1</version>
- <scope>compile</scope>
- <optional>true</optional>
- </dependency>
-
  <!-- We don't use this since the publish pom is then messed up -->
  <!--
  <dependency>
@@ -544,7 +536,7 @@
  </data>
  <data>
  <src>${project.build.directory}/lib</src>
- <includes>lucene*, log4j*, jna*, snappy-java-*, spatial4j*, jts*</includes>
+ <includes>lucene*, log4j*, jna*, spatial4j*, jts*</includes>
  <type>directory</type>
  <mapper>
  <type>perm</type>

src/main/assemblies/common-bin.xml

@@ -7,7 +7,6 @@
  <include>org.apache.lucene:lucene*</include>
  <include>log4j:log4j</include>
  <include>net.java.dev.jna:jna</include>
- <include>org.xerial.snappy:snappy-java</include>
  <include>com.spatial4j:spatial4j</include>
  <include>com.vividsolutions:jts</include>
  </includes>

src/main/java/org/elasticsearch/common/compress/CompressorFactory.java

@@ -27,9 +27,6 @@
 import org.elasticsearch.common.bytes.BytesReference;
 import org.elasticsearch.common.collect.MapBuilder;
 import org.elasticsearch.common.compress.lzf.LZFCompressor;
-import org.elasticsearch.common.compress.snappy.UnavailableSnappyCompressor;
-import org.elasticsearch.common.compress.snappy.xerial.XerialSnappy;
-import org.elasticsearch.common.compress.snappy.xerial.XerialSnappyCompressor;
 import org.elasticsearch.common.io.Streams;
 import org.elasticsearch.common.io.stream.CachedStreamOutput;
 import org.elasticsearch.common.io.stream.StreamInput;
@@ -54,19 +51,8 @@ public class CompressorFactory {
  static {
  List<Compressor> compressorsX = Lists.newArrayList();
  compressorsX.add(LZF);
- boolean addedSnappy = false;
- if (XerialSnappy.available) {
- compressorsX.add(new XerialSnappyCompressor());
- addedSnappy = true;
- } else {
- Loggers.getLogger(CompressorFactory.class).debug("failed to load xerial snappy-java", XerialSnappy.failure);
- }
- if (!addedSnappy) {
- compressorsX.add(new UnavailableSnappyCompressor());
- }
 
  compressors = compressorsX.toArray(new Compressor[compressorsX.size()]);
-
  MapBuilder<String, Compressor> compressorsByTypeX = MapBuilder.newMapBuilder();
  for (Compressor compressor : compressors) {
  compressorsByTypeX.put(compressor.type(), compressor);