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HBASE-11481 TableSnapshotInputFormat javadoc wrongly claims HBase 'enforces security'

This commit is contained in:
Andrew Purtell 2014-07-08 15:09:09 -07:00
parent ed9ab70180
commit f0b9b6bbf2
1 changed files with 2 additions and 3 deletions
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hbase-server/src/main/java/org/apache/hadoop/hbase/mapreduce/TableSnapshotInputFormat.java
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@ -74,9 +74,8 @@ import com.google.common.annotations.VisibleForTesting;
* from each RecordReader. An internal RegionScanner is used to execute the {@link Scan} obtained * from each RecordReader. An internal RegionScanner is used to execute the {@link Scan} obtained
* from the user. * from the user.
* <p> * <p>
* HBase owns all the data and snapshot files on the filesystem. Only the HBase user can read from * HBase owns all the data and snapshot files on the filesystem. Only the 'hbase' user can read from
* snapshot files and data files. HBase also enforces security because all the requests are handled * snapshot files and data files.
* by the server layer, and the user cannot read from the data files directly.
* To read from snapshot files directly from the file system, the user who is running the MR job * To read from snapshot files directly from the file system, the user who is running the MR job
* must have sufficient permissions to access snapshot and reference files. * must have sufficient permissions to access snapshot and reference files.
* This means that to run mapreduce over snapshot files, the MR job has to be run as the HBase * This means that to run mapreduce over snapshot files, the MR job has to be run as the HBase