The append pipeline does not followed TSP principal ---------------------------------------------------
Key: HDFS-1380 URL: https://issues.apache.org/jira/browse/HDFS-1380 Project: Hadoop HDFS Issue Type: Bug Components: hdfs client Affects Versions: 0.20-append Reporter: Thanh Do 1. Say we have 2 racks: rack-0 and rack-1. Rack-0 has dn1, dn2, dn3. Rack-0 has dn4, dn5, dn6. 2. Suppose client is in rack-0, and the write pipeline is: client --> localnode --> other rack --> other rack In this example we have the pipeline client-dn1-dn4-dn6. That is rack0-rack0-rack1-rack1. So far so good. 3. Now other client comes, and append to file. This client is also in rack-0. Interestingly, the append pipeline is client-dn6-dn4-dn1. That is the new client (from rack0) sends packet to the first node in pipeline (dn6) which belongs to rack1. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.