sahilTakiar commented on a change in pull request #597: HDFS-3246: pRead equivalent for direct read path URL: https://github.com/apache/hadoop/pull/597#discussion_r271087568
########## File path: hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/crypto/CryptoInputStream.java ########## @@ -341,17 +343,39 @@ public int read(long position, byte[] buffer, int offset, int length) "positioned read."); } } + + /** Positioned read using ByteBuffers. It is thread-safe */ + @Override + public int read(long position, final ByteBuffer buf) + throws IOException { + checkStream(); + try { + int pos = buf.position(); + final int n = ((ByteBufferPositionedReadable) in).read(position, buf); + if (n > 0) { + // This operation does not change the current offset of the file + decrypt(position, buf, n, pos); + } + + return n; + } catch (ClassCastException e) { + throw new UnsupportedOperationException("This stream does not support " + + "positioned read."); Review comment: Done ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org