Find port number where HDFS is listening

Below command available in Apache hadoop 2.7.0 onwards, this can be used for getting the values for the hadoop configuration properties. fs.default.name is deprecated in hadoop 2.0, fs.defaultFS is the updated value. Not sure whether this will work incase of maprfs. hdfs getconf -confKey fs.defaultFS # ( new property ) or hdfs getconf -confKey fs.default.name … Read more

Spark read file from S3 using sc.textFile (“s3n://…)

Confirmed that this is related to the Spark build against Hadoop 2.60. Just installed Spark 1.4.0 “Pre built for Hadoop 2.4 and later” (instead of Hadoop 2.6). And the code now works OK. sc.textFile(“s3n://bucketname/Filename”) now raises another error: java.lang.IllegalArgumentException: AWS Access Key ID and Secret Access Key must be specified as the username or password … Read more

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