mkdir on s3a should not be sensitive to trailing '/'

[hive@hiveserver2-0 lib]$ hdfs dfs -mkdir s3a://qe-s3-bucket-mst-xfpn-dwx-external/custom-jars2/
/usr/bin/hdfs: line 4: /usr/lib/bigtop-utils/bigtop-detect-javahome: No such file or directory
log4j:WARN No appenders could be found for logger (org.apache.hadoop.util.Shell).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
mkdir: get on s3a://qe-s3-bucket-mst-xfpn-dwx-external/custom-jars2/: com.amazonaws.services.dynamodbv2.model.AmazonDynamoDBException: One or more parameter values were invalid: An AttributeValue may not contain an empty string (Service: AmazonDynamoDBv2; Status Code: 400; Error Code: ValidationException; Request ID: 1AE0KA2Q5ADI47R75N8BDJE973VV4KQNSO5AEMVJF66Q9ASUAAJG): One or more parameter values were invalid: An AttributeValue may not contain an empty string (Service: AmazonDynamoDBv2; Status Code: 400; Error Code: ValidationException; Request ID: 1AE0KA2Q5ADI47R75N8BDJE973VV4KQNSO5AEMVJF66Q9ASUAAJG)
[hive@hiveserver2-0 lib]$ hdfs dfs -mkdir s3a://qe-s3-bucket-mst-xfpn-dwx-external/custom-jars2
/usr/bin/hdfs: line 4: /usr/lib/bigtop-utils/bigtop-detect-javahome: No such file or directory
log4j:WARN No appenders could be found for logger (org.apache.hadoop.util.Shell).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
[hive@hiveserver2-0 lib]$