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## Package org.apache.cassandra.utils

Interface Summary
CloseableIterator<T> |
IMergeIterator<In,Out> |
OutputHandler |
Throttle.ThroughputFunction |

Class Summary
AbstractStatsDeque |
Allocator |
BigLongArray | A GC friendly long[].
BloomFilter |
BloomFilterSerializer |
BoundedStatsDeque | bounded threadsafe deque
ByteBufferUtil | Utility methods to make ByteBuffers less painful The following should illustrate the different ways byte buffers can be used public void testArrayOffet() { byte[] b = "test_slice_array".getBytes(); ByteBuffer bb = ByteBuffer.allocate(1024); assert bb.position() == 0; assert bb.limit() == 1024; assert bb.capacity() == 1024; bb.put(b); assert bb.position() == b.length; assert bb.remaining() == bb.limit() - bb.position(); ByteBuffer bb2 = bb.slice(); assert bb2.position() == 0; //slice should begin at other buffers current position assert bb2.arrayOffset() == bb.position(); //to match the position in the underlying array one needs to //track arrayOffset assert bb2.limit()+bb2.arrayOffset() == bb.limit(); assert bb2.remaining() == bb.remaining(); } }
BytesReadTracker | This class is to track bytes read from given DataInput
CLibrary |
DefaultDouble | Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.
DefaultInteger | Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.
DestructivePQIterator<T> |
EstimatedHistogram |
EstimatedHistogram.EstimatedHistogramSerializer |
ExpiringMap<K,V> |
FBUtilities |
Filter |
GuidGenerator |
HeapAllocator |
Hex |
LatencyTracker |
LegacyBloomFilter |
LegacyBloomFilterSerializer |
MergeIterator<In,Out> | Merges sorted input iterators which individually contain unique items.
MergeIterator.Candidate<In> |
MergeIterator.Reducer<In,Out> | Accumulator that collects values of type A, and outputs a value of type B.
MerkleTree | A MerkleTree implemented as a binary tree.
MerkleTree.MerkleTreeSerializer |
MerkleTree.RowHash | Hash value representing a row, to be used to pass hashes to the MerkleTree.
MerkleTree.TreeRange | The public interface to a range in the tree.
MerkleTree.TreeRangeIterator | Returns the leaf (range) of a given tree in increasing order.
MurmurHash | This is a very fast, non-cryptographic hash suitable for general hash-based lookup.
Mx4jTool | If mx4j-tools is in the classpath call maybeLoad to load the HTTP interface of mx4j.
NodeId |
NodeId.NodeIdRecord |
NodeId.OneShotRenewer |
OutputHandler.LogOutput |
OutputHandler.SystemOutput |
Pair<T1,T2> |
PureJavaCrc32 | A pure-java implementation of the CRC32 checksum that uses the same polynomial as the built-in native CRC32.
ResourceWatcher |
ResourceWatcher.WatchedResource |
SemanticVersion | Implements semantic versioning as defined at http://semver.org/.
SimpleCondition |
SkipNullRepresenter | Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.
SlabAllocator | The SlabAllocator is a bump-the-pointer allocator that allocates large (2MB by default) regions and then doles them out to threads that request slices into the array.
StatusLogger |
Throttle | Encapsulates the timing/state required to throttle a caller to a target throughput in bytes per millisecond, when periodically passed an absolute count of bytes.
UUIDGen | The goods are here: www.ietf.org/rfc/rfc4122.txt.
WrappedRunnable |

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