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ASF GitHub Bot commented on DRILL-4134: --------------------------------------- Github user julienledem commented on a diff in the pull request: https://github.com/apache/drill/pull/283#discussion_r46316115 --- Diff: exec/memory/base/src/main/java/org/apache/drill/exec/memory/README.md --- @@ -0,0 +1,121 @@ +<!-- + 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. +--> +# Memory: Allocation, Accounting and Management + +The memory management package contains all the memory allocation related items that Drill uses to manage memory. + + +## Key Components +Memory management can be broken into the following main components: + +- Memory chunk allocation and fragmentation management + - `PooledByteBufAllocatorL` - A LittleEndian clone of Netty's jemalloc implementation + - `UnsafeDirectLittleEndian` - A base level memory access interface + - `LargeBuffer` - A buffer backing implmentation used when working with data larger than one Netty chunk (default to 16mb) --- End diff -- typo: s/implmentation/implementation > Incorporate remaining patches from DRILL-1942 Allocator refactor > ---------------------------------------------------------------- > > Key: DRILL-4134 > URL: https://issues.apache.org/jira/browse/DRILL-4134 > Project: Apache Drill > Issue Type: Sub-task > Components: Execution - Flow > Reporter: Jacques Nadeau > Assignee: Jacques Nadeau > Fix For: 1.4.0 > > -- This message was sent by Atlassian JIRA (v6.3.4#6332)