5f34271bb1
The ABFS connector now implements listStatusIterator() with asynchronous prefetching of the next page(s) of results. For listing large directories this can provide tangible speedups. If for any reason this needs to be disabled, set fs.azure.enable.abfslistiterator to false. Contributed by Bilahari T H.
87 lines
3.5 KiB
XML
87 lines
3.5 KiB
XML
<!--
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-->
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<FindBugsFilter>
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<!-- This reference equality check is an intentional light weight
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check to avoid re-validating the token when re-used. -->
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<Match>
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<Class name="org.apache.hadoop.fs.azurebfs.utils.CachedSASToken" />
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<Method name="update" />
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<Bug pattern="ES_COMPARING_PARAMETER_STRING_WITH_EQ" />
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</Match>
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<!-- This is intentional. The unsynchronized field access is safe
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and only synchronized access is used when using the sasToken
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for authorization. -->
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<Match>
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<Class name="org.apache.hadoop.fs.azurebfs.utils.CachedSASToken" />
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<Field name="sasToken" />
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<Bug pattern="IS2_INCONSISTENT_SYNC" />
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</Match>
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<!-- It is okay to skip up to end of file. No need to check return value. -->
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<Match>
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<Class name="org.apache.hadoop.fs.azure.AzureNativeFileSystemStore" />
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<Method name="retrieve" />
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<Bug pattern="SR_NOT_CHECKED" />
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<Priority value="2" />
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</Match>
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<!-- Returning fully loaded array to iterate through is a convenience
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and helps performance. -->
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<Match>
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<Class name="org.apache.hadoop.fs.azure.NativeAzureFileSystem$FolderRenamePending" />
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<Method name="getFiles" />
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<Bug pattern="EI_EXPOSE_REP" />
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<Priority value="2" />
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</Match>
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<!-- Need to start keep-alive thread for SelfRenewingLease in constructor. -->
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<Match>
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<Class name="org.apache.hadoop.fs.azure.SelfRenewingLease" />
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<Bug pattern="SC_START_IN_CTOR" />
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<Priority value="2" />
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</Match>
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<!-- Using a key set iterator is fine because this is not a performance-critical
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method. -->
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<Match>
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<Class name="org.apache.hadoop.fs.azure.PageBlobOutputStream" />
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<Method name="logAllStackTraces" />
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<Bug pattern="WMI_WRONG_MAP_ITERATOR" />
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<Priority value="2" />
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</Match>
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<!-- FileMetadata is used internally for storing metadata but also
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subclasses FileStatus to reduce allocations when listing a large number
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of files. When it is returned to an external caller as a FileStatus, the
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extra metadata is no longer useful and we want the equals and hashCode
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methods of FileStatus to be used. -->
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<Match>
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<Class name="org.apache.hadoop.fs.azure.FileMetadata" />
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<Bug pattern="EQ_DOESNT_OVERRIDE_EQUALS" />
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</Match>
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<!-- continuation is returned from an external http call. Keeping this
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outside synchronized block since the same is costly. -->
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<Match>
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<Class name="org.apache.hadoop.fs.azurebfs.services.AbfsListStatusRemoteIterator" />
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<Field name="continuation" />
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<Bug pattern="IS2_INCONSISTENT_SYNC" />
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</Match>
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</FindBugsFilter>
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