cassandra-server

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  <html lang="en"> <head>  <title>org.apache.cassandra.db (apache-cassandra API)</title> <meta name="date" content="2014-09-07"> <link rel="stylesheet" type="text/css" href="../../../../stylesheet.css" title="Style"> </head> <body> <script type="text/javascript"> </script> <noscript> <div>JavaScript is disabled on your browser.</div> </noscript>  <div class="topNav"><a name="navbar_top">  </a><a href="#skip-navbar_top" title="Skip navigation links"></a><a name="navbar_top_firstrow">  </a> <ul class="navList" title="Navigation"> <li><a href="../../../../overview-summary.html">Overview</a></li> <li class="navBarCell1Rev">Package</li> <li>Class</li> <li><a href="package-use.html">Use</a></li> <li><a href="package-tree.html">Tree</a></li> <li><a href="../../../../deprecated-list.html">Deprecated</a></li> <li><a href="../../../../index-all.html">Index</a></li> <li><a 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summary="Interface Summary table, listing interfaces, and an explanation"> <caption><span>Interface Summary</span><span class="tabEnd"> </span></caption> <tr> <th class="colFirst" scope="col">Interface</th> <th class="colLast" scope="col">Description</th> </tr> <tbody> <tr class="altColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/BatchlogManagerMBean.html" title="interface in org.apache.cassandra.db">BatchlogManagerMBean</a></td> <td class="colLast"> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/BlacklistedDirectoriesMBean.html" title="interface in org.apache.cassandra.db">BlacklistedDirectoriesMBean</a></td> <td class="colLast"> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/Cell.html" title="interface in org.apache.cassandra.db">Cell</a></td> <td class="colLast"> <div class="block">Cell is immutable, which prevents all kinds of confusion in a multithreaded environment.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/ColumnFamilyStoreMBean.html" title="interface in org.apache.cassandra.db">ColumnFamilyStoreMBean</a></td> <td class="colLast"> <div class="block">The MBean interface for ColumnFamilyStore</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/CounterCell.html" title="interface in org.apache.cassandra.db">CounterCell</a></td> <td class="colLast"> <div class="block">A column that represents a partitioned counter.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/CounterUpdateCell.html" title="interface in org.apache.cassandra.db">CounterUpdateCell</a></td> <td class="colLast"> <div class="block">A counter update while it hasn't been applied yet by the leader replica.</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/DeletedCell.html" title="interface in org.apache.cassandra.db">DeletedCell</a></td> <td class="colLast"> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/ExpiringCell.html" title="interface in org.apache.cassandra.db">ExpiringCell</a></td> <td class="colLast"> <div class="block">Alternative to Cell that have an expiring time.</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/HintedHandOffManagerMBean.html" title="interface in org.apache.cassandra.db">HintedHandOffManagerMBean</a></td> <td class="colLast"> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/IMutation.html" title="interface in org.apache.cassandra.db">IMutation</a></td> <td class="colLast"> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/OnDiskAtom.html" title="interface in org.apache.cassandra.db">OnDiskAtom</a></td> <td class="colLast"> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/RowPosition.html" title="interface in org.apache.cassandra.db">RowPosition</a></td> <td class="colLast"> </td> </tr> </tbody> </table> </li> <li class="blockList"> <table class="packageSummary" border="0" cellpadding="3" cellspacing="0" summary="Class Summary table, listing classes, and an explanation"> <caption><span>Class Summary</span><span class="tabEnd"> </span></caption> <tr> <th class="colFirst" scope="col">Class</th> <th class="colLast" scope="col">Description</th> </tr> <tbody> <tr class="altColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/AbstractCell.html" title="class in org.apache.cassandra.db">AbstractCell</a></td> <td class="colLast"> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/AbstractNativeCell.html" title="class in org.apache.cassandra.db">AbstractNativeCell</a></td> <td class="colLast"> <div class="block">Packs a CellName AND a Cell into one off-heap representation.</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/AbstractRangeCommand.html" title="class in org.apache.cassandra.db">AbstractRangeCommand</a></td> <td class="colLast"> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/ArrayBackedSortedColumns.html" title="class in org.apache.cassandra.db">ArrayBackedSortedColumns</a></td> <td class="colLast"> <div class="block">A ColumnFamily backed by an array.</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/AtomDeserializer.html" title="class in org.apache.cassandra.db">AtomDeserializer</a></td> <td class="colLast"> <div class="block">Helper class to deserialize OnDiskAtom efficiently.</div> </td> </tr> <tr class="rowColor"> <td 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class="colFirst"><a href="../../../../org/apache/cassandra/db/ColumnFamily.html" title="class in org.apache.cassandra.db">ColumnFamily</a></td> <td class="colLast"> <div class="block">A sorted map of columns.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/ColumnFamily.Factory.html" title="class in org.apache.cassandra.db">ColumnFamily.Factory</a><T extends <a href="../../../../org/apache/cassandra/db/ColumnFamily.html" title="class in org.apache.cassandra.db">ColumnFamily</a>></td> <td class="colLast"> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/ColumnFamilySerializer.html" title="class in org.apache.cassandra.db">ColumnFamilySerializer</a></td> <td class="colLast"> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/ColumnFamilyStore.html" title="class in org.apache.cassandra.db">ColumnFamilyStore</a></td> <td class="colLast"> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/ColumnFamilyStore.AbstractScanIterator.html" title="class in org.apache.cassandra.db">ColumnFamilyStore.AbstractScanIterator</a></td> <td class="colLast"> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/ColumnFamilyStore.FlushLargestColumnFamily.html" title="class in org.apache.cassandra.db">ColumnFamilyStore.FlushLargestColumnFamily</a></td> <td class="colLast"> <div class="block">Finds the largest memtable, as a percentage of *either* on- or off-heap memory limits, and immediately queues it for flushing.</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/ColumnFamilyStore.ViewFragment.html" title="class in org.apache.cassandra.db">ColumnFamilyStore.ViewFragment</a></td> <td class="colLast"> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/ColumnIndex.html" title="class in org.apache.cassandra.db">ColumnIndex</a></td> <td class="colLast"> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/ColumnIndex.Builder.html" title="class in org.apache.cassandra.db">ColumnIndex.Builder</a></td> <td class="colLast"> <div class="block">Help to create an index for a column family based on size of columns, and write said columns to disk.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/ColumnSerializer.html" title="class in org.apache.cassandra.db">ColumnSerializer</a></td> <td class="colLast"> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/CounterMutation.html" title="class in org.apache.cassandra.db">CounterMutation</a></td> <td class="colLast"> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/CounterMutation.CounterMutationSerializer.html" title="class in org.apache.cassandra.db">CounterMutation.CounterMutationSerializer</a></td> <td class="colLast"> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/CounterMutationVerbHandler.html" title="class in org.apache.cassandra.db">CounterMutationVerbHandler</a></td> <td class="colLast"> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/DataRange.html" title="class in org.apache.cassandra.db">DataRange</a></td> <td class="colLast"> <div class="block">Groups key range and column filter for range queries.</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/DataRange.Paging.html" title="class in org.apache.cassandra.db">DataRange.Paging</a></td> <td class="colLast"> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/DataTracker.html" title="class in org.apache.cassandra.db">DataTracker</a></td> <td class="colLast"> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/DataTracker.SSTableIntervalTree.html" title="class in org.apache.cassandra.db">DataTracker.SSTableIntervalTree</a></td> <td class="colLast"> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/DataTracker.View.html" title="class in org.apache.cassandra.db">DataTracker.View</a></td> <td class="colLast"> <div class="block">An immutable structure holding the current memtable, the memtables pending flush, the sstables for a column family, and the sstables that are active in compaction (a subset of the sstables).</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/DecoratedKey.html" title="class in org.apache.cassandra.db">DecoratedKey</a></td> <td class="colLast"> <div class="block">Represents a decorated key, handy for certain operations where just working with strings gets slow.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/DefinitionsUpdateVerbHandler.html" title="class in org.apache.cassandra.db">DefinitionsUpdateVerbHandler</a></td> <td class="colLast"> <div class="block">Called when node receives updated schema state from the schema migration coordinator node.</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/DefsTables.html" title="class in org.apache.cassandra.db">DefsTables</a></td> <td class="colLast"> <div class="block">SCHEMA_{KEYSPACES, COLUMNFAMILIES, COLUMNS}_CF are used to store Keyspace/ColumnFamily attributes to make schema load/distribution easy, it replaces old mechanism when local migrations where serialized, stored in system.Migrations and used for schema distribution.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/DeletionInfo.html" title="class in org.apache.cassandra.db">DeletionInfo</a></td> <td class="colLast"> <div class="block">A combination of a top-level (or row) tombstone and range tombstones describing the deletions within a <a href="../../../../org/apache/cassandra/db/ColumnFamily.html" title="class in org.apache.cassandra.db"><code>ColumnFamily</code></a> (or row).</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/DeletionInfo.Serializer.html" title="class in org.apache.cassandra.db">DeletionInfo.Serializer</a></td> <td class="colLast"> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/DeletionTime.html" title="class in org.apache.cassandra.db">DeletionTime</a></td> <td class="colLast"> <div class="block">A top-level (row) tombstone.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/DeletionTime.Serializer.html" title="class in org.apache.cassandra.db">DeletionTime.Serializer</a></td> <td class="colLast"> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/Directories.html" title="class in org.apache.cassandra.db">Directories</a></td> <td class="colLast"> <div class="block">Encapsulate handling of paths to the data files.</div> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/Directories.DataDirectory.html" title="class in org.apache.cassandra.db">Directories.DataDirectory</a></td> <td class="colLast"> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/HintedHandOffManager.html" title="class in org.apache.cassandra.db">HintedHandOffManager</a></td> <td class="colLast"> <div class="block">The hint schema looks like this: CREATE TABLE hints ( target_id uuid, hint_id timeuuid, message_version int, mutation blob, PRIMARY KEY (target_id, hint_id, message_version) ) WITH COMPACT STORAGE; Thus, for each node in the cluster we treat its uuid as the partition key; each hint is a logical row (physical composite column) containing the mutation to replay and associated metadata.</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/IndexExpression.html" title="class in org.apache.cassandra.db">IndexExpression</a></td> <td class="colLast"> </td> </tr> <tr class="rowColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/Keyspace.html" title="class in org.apache.cassandra.db">Keyspace</a></td> <td class="colLast"> <div class="block">It represents a Keyspace.</div> </td> </tr> <tr class="altColor"> <td class="colFirst"><a href="../../../../org/apache/cassandra/db/Memtable.html" title="class in org.apache.cassandra.db">Memtable</a></td> <td class="colLast"> </td> </tr> <tr class="rowColor"> <td 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