Hi, In security mode, Is it possible in one mr job visit two user's data in hdfs? Means: there are two maps in one job, one map read user1's data, another read user2's data. As I know, before submit job, jobclient get the delegation token for MR task, but in class credentials, the tokenmap can only take one token for one type of service. If I get user2's token, and add to credentials, the user1's token will be overwrite.
Anyone met the same situation or someone can give some suggestions? The background is in hive, one sql maybe visit different user's data. Tks. Regards wwli
