adelapena commented on code in PR #1723: URL: https://github.com/apache/cassandra/pull/1723#discussion_r975177997
########## src/java/org/apache/cassandra/db/memtable/TrieMemtable.java: ########## @@ -0,0 +1,793 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.apache.cassandra.db.memtable; + +import java.util.ArrayList; +import java.util.Iterator; +import java.util.List; +import java.util.Map; +import java.util.NavigableSet; +import java.util.Objects; +import java.util.concurrent.atomic.AtomicBoolean; +import java.util.concurrent.atomic.AtomicReference; +import java.util.concurrent.locks.ReentrantLock; + +import com.google.common.annotations.VisibleForTesting; +import com.google.common.base.Throwables; +import com.google.common.collect.Iterators; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import org.apache.cassandra.config.DatabaseDescriptor; +import org.apache.cassandra.db.BufferDecoratedKey; +import org.apache.cassandra.db.Clustering; +import org.apache.cassandra.db.ColumnFamilyStore; +import org.apache.cassandra.db.DataRange; +import org.apache.cassandra.db.DecoratedKey; +import org.apache.cassandra.db.DeletionInfo; +import org.apache.cassandra.db.PartitionPosition; +import org.apache.cassandra.db.RegularAndStaticColumns; +import org.apache.cassandra.db.Slices; +import org.apache.cassandra.db.commitlog.CommitLogPosition; +import org.apache.cassandra.db.filter.ClusteringIndexFilter; +import org.apache.cassandra.db.filter.ColumnFilter; +import org.apache.cassandra.db.partitions.AbstractUnfilteredPartitionIterator; +import org.apache.cassandra.db.partitions.BTreePartitionData; +import org.apache.cassandra.db.partitions.BTreePartitionUpdater; +import org.apache.cassandra.db.partitions.ImmutableBTreePartition; +import org.apache.cassandra.db.partitions.Partition; +import org.apache.cassandra.db.partitions.PartitionUpdate; +import org.apache.cassandra.db.partitions.UnfilteredPartitionIterator; +import org.apache.cassandra.db.rows.EncodingStats; +import org.apache.cassandra.db.rows.Row; +import org.apache.cassandra.db.rows.UnfilteredRowIterator; +import org.apache.cassandra.db.tries.MemtableTrie; +import org.apache.cassandra.db.tries.Trie; +import org.apache.cassandra.dht.AbstractBounds; +import org.apache.cassandra.dht.Bounds; +import org.apache.cassandra.dht.IncludingExcludingBounds; +import org.apache.cassandra.dht.Range; +import org.apache.cassandra.index.transactions.UpdateTransaction; +import org.apache.cassandra.io.compress.BufferType; +import org.apache.cassandra.io.sstable.format.SSTableReadsListener; +import org.apache.cassandra.metrics.TableMetrics; +import org.apache.cassandra.metrics.TrieMemtableMetricsView; +import org.apache.cassandra.schema.TableMetadata; +import org.apache.cassandra.schema.TableMetadataRef; +import org.apache.cassandra.utils.Clock; +import org.apache.cassandra.utils.FBUtilities; +import org.apache.cassandra.utils.MBeanWrapper; +import org.apache.cassandra.utils.bytecomparable.ByteComparable; +import org.apache.cassandra.utils.bytecomparable.ByteSource; +import org.apache.cassandra.utils.concurrent.OpOrder; +import org.apache.cassandra.utils.memory.EnsureOnHeap; +import org.apache.cassandra.utils.memory.MemtableAllocator; +import org.github.jamm.Unmetered; + +public class TrieMemtable extends AbstractAllocatorMemtable +{ + private static final Logger logger = LoggerFactory.getLogger(TrieMemtable.class); + public static final String TRIE_MEMTABLE_CONFIG_OBJECT_NAME = "org.apache.cassandra.db:type=TrieMemtableConfig"; + + /** Buffer type to use for memtable tries (on- vs off-heap) */ + public static final BufferType BUFFER_TYPE; + + public static final String SHARDS_OPTION = "shards"; + + static + { + switch (DatabaseDescriptor.getMemtableAllocationType()) + { + case unslabbed_heap_buffers: + case heap_buffers: + BUFFER_TYPE = BufferType.ON_HEAP; + break; + case offheap_buffers: + case offheap_objects: + BUFFER_TYPE = BufferType.OFF_HEAP; + break; + default: + throw new AssertionError(); Review Comment: Agree, the Java conventions say that so we should follow them here. Just realized that it's quite common to see that additional indentation across the codebase, maybe because the default IntelliJ code style adds it. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
