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HADOOP-16986. S3A to not need wildfly JAR on its classpath. Contributed by Steve Loughran This is a successor to HADOOP-16346, which enabled the S3A connector to load the native openssl SSL libraries for better HTTPS performance. That patch required wildfly.jar to be on the classpath. This update: * Makes wildfly.jar optional except in the special case that "fs.s3a.ssl.channel.mode" is set to "openssl" * Retains the declaration of wildfly.jar as a compile-time dependency in the hadoop-aws POM. This means that unless explicitly excluded, applications importing that published maven artifact will, transitively, add the specified wildfly JAR into their classpath for compilation/testing/ distribution. This is done for packaging and to offer that optional speedup. It is not mandatory: applications importing the hadoop-aws POM can exclude it if they choose.
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