@defaultMessage spawns threads with vague names; use a custom thread factory and name threads so that you can tell (by its name) which executor it is associated with java.util.concurrent.Executors#newFixedThreadPool(int) java.util.concurrent.Executors#newSingleThreadExecutor() java.util.concurrent.Executors#newCachedThreadPool() java.util.concurrent.Executors#newSingleThreadScheduledExecutor() java.util.concurrent.Executors#newScheduledThreadPool(int) java.util.concurrent.Executors#defaultThreadFactory() java.util.concurrent.Executors#privilegedThreadFactory() java.lang.Character#codePointBefore(char[],int) @ Implicit start offset is error-prone when the char[] is a buffer and the first chars are random chars java.lang.Character#codePointAt(char[],int) @ Implicit end offset is error-prone when the char[] is a buffer and the last chars are random chars @defaultMessage Collections.sort dumps data into an array, sorts the array and reinserts data into the list, one should rather use Lucene's CollectionUtil sort methods which sort in place java.util.Collections#sort(java.util.List) java.util.Collections#sort(java.util.List,java.util.Comparator) java.io.StringReader#(java.lang.String) @ Use FastStringReader instead @defaultMessage Reference management is tricky, leave it to SearcherManager org.apache.lucene.index.IndexReader#decRef() org.apache.lucene.index.IndexReader#incRef() org.apache.lucene.index.IndexReader#tryIncRef() @defaultMessage QueryWrapperFilter is cachable by default - use Queries#wrap instead org.apache.lucene.search.QueryWrapperFilter#(org.apache.lucene.search.Query) @defaultMessage Because the filtercache doesn't take deletes into account FilteredQuery can't be used - use XFilteredQuery instead org.apache.lucene.search.FilteredQuery#(org.apache.lucene.search.Query,org.apache.lucene.search.Filter) org.apache.lucene.search.FilteredQuery#(org.apache.lucene.search.Query,org.apache.lucene.search.Filter,org.apache.lucene.search.FilteredQuery$FilterStrategy) @defaultMessage Pass the precision step from the mappings explicitly instead org.apache.lucene.search.NumericRangeQuery#newDoubleRange(java.lang.String,java.lang.Double,java.lang.Double,boolean,boolean) org.apache.lucene.search.NumericRangeQuery#newFloatRange(java.lang.String,java.lang.Float,java.lang.Float,boolean,boolean) org.apache.lucene.search.NumericRangeQuery#newIntRange(java.lang.String,java.lang.Integer,java.lang.Integer,boolean,boolean) org.apache.lucene.search.NumericRangeQuery#newLongRange(java.lang.String,java.lang.Long,java.lang.Long,boolean,boolean) org.apache.lucene.search.NumericRangeFilter#newDoubleRange(java.lang.String,java.lang.Double,java.lang.Double,boolean,boolean) org.apache.lucene.search.NumericRangeFilter#newFloatRange(java.lang.String,java.lang.Float,java.lang.Float,boolean,boolean) org.apache.lucene.search.NumericRangeFilter#newIntRange(java.lang.String,java.lang.Integer,java.lang.Integer,boolean,boolean) org.apache.lucene.search.NumericRangeFilter#newLongRange(java.lang.String,java.lang.Long,java.lang.Long,boolean,boolean) @defaultMessage Only use wait / notify when really needed try to use concurrency primitives, latches or callbacks instead. java.lang.Object#wait() java.lang.Object#wait(long) java.lang.Object#wait(long,int) java.lang.Object#notify() java.lang.Object#notifyAll() @defaultMessage Beware of the behavior of this method on MIN_VALUE java.lang.Math#abs(int) java.lang.Math#abs(long) @defaultMessage Please do not try to stop the world java.lang.System#gc() @defaultMessage Use Long.compare instead we are on Java7 com.google.common.primitives.Longs#compare(long,long) @defaultMessage Use Channels.* methods to write to channels. Do not write directly. java.nio.channels.WritableByteChannel#write(java.nio.ByteBuffer) java.nio.channels.FileChannel#write(java.nio.ByteBuffer, long) java.nio.channels.GatheringByteChannel#write(java.nio.ByteBuffer[], int, int) java.nio.channels.GatheringByteChannel#write(java.nio.ByteBuffer[]) java.nio.channels.ReadableByteChannel#read(java.nio.ByteBuffer) java.nio.channels.ScatteringByteChannel#read(java.nio.ByteBuffer[]) java.nio.channels.ScatteringByteChannel#read(java.nio.ByteBuffer[], int, int) java.nio.channels.FileChannel#read(java.nio.ByteBuffer, long) @defaultMessage Use Lucene.parseLenient instead it strips off minor version org.apache.lucene.util.Version#parseLeniently(java.lang.String) @defaultMessage unsafe encoders/decoders have problems in the lzf compress library. Use variants of encode/decode functions which take Encoder/Decoder. com.ning.compress.lzf.impl.UnsafeChunkEncoders#createEncoder(int) com.ning.compress.lzf.impl.UnsafeChunkEncoders#createNonAllocatingEncoder(int) com.ning.compress.lzf.impl.UnsafeChunkEncoders#createEncoder(int, com.ning.compress.BufferRecycler) com.ning.compress.lzf.impl.UnsafeChunkEncoders#createNonAllocatingEncoder(int, com.ning.compress.BufferRecycler) com.ning.compress.lzf.impl.UnsafeChunkDecoder#() com.ning.compress.lzf.parallel.CompressTask com.ning.compress.lzf.util.ChunkEncoderFactory#optimalInstance() com.ning.compress.lzf.util.ChunkEncoderFactory#optimalInstance(int) com.ning.compress.lzf.util.ChunkEncoderFactory#optimalNonAllocatingInstance(int) com.ning.compress.lzf.util.ChunkEncoderFactory#optimalInstance(com.ning.compress.BufferRecycler) com.ning.compress.lzf.util.ChunkEncoderFactory#optimalInstance(int, com.ning.compress.BufferRecycler) com.ning.compress.lzf.util.ChunkEncoderFactory#optimalNonAllocatingInstance(int, com.ning.compress.BufferRecycler) com.ning.compress.lzf.util.ChunkDecoderFactory#optimalInstance() com.ning.compress.lzf.util.LZFFileInputStream#(java.io.File) com.ning.compress.lzf.util.LZFFileInputStream#(java.io.FileDescriptor) com.ning.compress.lzf.util.LZFFileInputStream#(java.lang.String) com.ning.compress.lzf.util.LZFFileOutputStream#(java.io.File) com.ning.compress.lzf.util.LZFFileOutputStream#(java.io.File, boolean) com.ning.compress.lzf.util.LZFFileOutputStream#(java.io.FileDescriptor) com.ning.compress.lzf.util.LZFFileOutputStream#(java.lang.String) com.ning.compress.lzf.util.LZFFileOutputStream#(java.lang.String, boolean) com.ning.compress.lzf.LZFEncoder#encode(byte[]) com.ning.compress.lzf.LZFEncoder#encode(byte[], int, int) com.ning.compress.lzf.LZFEncoder#encode(byte[], int, int, com.ning.compress.BufferRecycler) com.ning.compress.lzf.LZFEncoder#appendEncoded(byte[], int, int, byte[], int) com.ning.compress.lzf.LZFEncoder#appendEncoded(byte[], int, int, byte[], int, com.ning.compress.BufferRecycler) com.ning.compress.lzf.LZFCompressingInputStream#(java.io.InputStream) com.ning.compress.lzf.LZFDecoder#fastDecoder() com.ning.compress.lzf.LZFDecoder#decode(byte[]) com.ning.compress.lzf.LZFDecoder#decode(byte[], int, int) com.ning.compress.lzf.LZFDecoder#decode(byte[], byte[]) com.ning.compress.lzf.LZFDecoder#decode(byte[], int, int, byte[]) com.ning.compress.lzf.LZFInputStream#(java.io.InputStream) com.ning.compress.lzf.LZFInputStream#(java.io.InputStream, boolean) com.ning.compress.lzf.LZFInputStream#(java.io.InputStream, com.ning.compress.BufferRecycler) com.ning.compress.lzf.LZFInputStream#(java.io.InputStream, com.ning.compress.BufferRecycler, boolean) com.ning.compress.lzf.LZFOutputStream#(java.io.OutputStream) com.ning.compress.lzf.LZFOutputStream#(java.io.OutputStream, com.ning.compress.BufferRecycler) com.ning.compress.lzf.LZFUncompressor#(com.ning.compress.DataHandler) com.ning.compress.lzf.LZFUncompressor#(com.ning.compress.DataHandler, com.ning.compress.BufferRecycler)