<!-- 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. --> <FindBugsFilter> <!-- same code as in FileSystem is triggering the same warning. --> <Match> <Class name="org.apache.hadoop.fs.s3native.S3xLoginHelper" /> <Method name="checkPath" /> <Bug pattern="ES_COMPARING_STRINGS_WITH_EQ" /> </Match> <!-- Redundant null check makes code clearer, future-proof here. --> <Match> <Class name="org.apache.hadoop.fs.s3a.S3AFileSystem" /> <Method name="s3Exists" /> <Bug pattern="RCN_REDUNDANT_NULLCHECK_OF_NONNULL_VALUE" /> </Match> <!-- This extends the serializable S3Object, so findbug checks serializability. It is never serialized however, so its warnings are false positives. --> <Match> <Class name="org.apache.hadoop.fs.s3a.InconsistentS3Object" /> <Bug pattern="SE_TRANSIENT_FIELD_NOT_RESTORED" /> </Match> <Match> <Class name="org.apache.hadoop.fs.s3a.InconsistentS3Object" /> <Bug pattern="SE_NO_SERIALVERSIONID" /> </Match> <!-- findbugs gets confused by lambda expressions in synchronized methods and considers references to fields to be unsynchronized. As you can't disable the methods individually, we have to disable them for the entire class. --> <Match> <Class name="org.apache.hadoop.fs.s3a.S3AInputStream"/> <Bug pattern="IS2_INCONSISTENT_SYNC"/> </Match> <!-- findbugs reporting RV ignored. Not true. "Return value of S3AReadOpContext.getReadInvoker() ignored, but method has no side effect" --> <Match> <Class name="org.apache.hadoop.fs.s3a.S3AInputStream"/> <Method name="reopen"/> <Bug pattern="RV_RETURN_VALUE_IGNORED_NO_SIDE_EFFECT"/> </Match> <Match> <Class name="org.apache.hadoop.fs.s3a.S3AFileSystem"/> <Method name="openFileWithOptions"/> <Bug pattern="RV_RETURN_VALUE_IGNORED_BAD_PRACTICE"/> </Match> <Match> <Class name="org.apache.hadoop.fs.s3a.s3guard.S3GuardTool$BucketInfo"/> <Method name="run"/> <Bug pattern="SF_SWITCH_FALLTHROUGH"/> </Match> <!-- Some of the S3A Instrumentation classes increment volatile references from within synchronized contexts; they use volatile to keep the cost of these updates and reading them down. --> <Match> <Class name="org.apache.hadoop.fs.s3a.S3AInstrumentation$InputStreamStatisticsImpl"/> <Bug pattern="VO_VOLATILE_INCREMENT"/> </Match> <!-- Ignore return value from this method call --> <Match> <Class name="org.apache.hadoop.fs.s3a.impl.StoreContext"/> <Method name="submit"/> <Bug pattern="RV_RETURN_VALUE_IGNORED_BAD_PRACTICE"/> </Match> </FindBugsFilter>