Hi All, I have following doubts on pluggable FileSystem and YARN 1. If all the implementations should extend FileSystem then why there is a parallel class AbstractFileSystem. which ViewFS extends ? 2. Is YARN supposed to run on any of the pluggable org.apache.hadoop.fs.FileSystem like s3 ? if its suppose to run then when submitting a job in the client side YARNRunner is calling FileContext.getFileContext(this.conf); which is further calling FileContext.getAbstractFileSystem() which throws exception for S3. So i am not able to run YARN job with ViewFS with S3 as mount. And based on the code even if i configure only S3 then also its going to fail. 3. HDFS does not support "fs.AbstractFileSystem.s3.impl" with some default class similar to org.apache.hadoop.fs.s3.S3FileSystem ?
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