[ https://issues.apache.org/jira/browse/HDFS-3586?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Vinayakumar B reopened HDFS-3586: --------------------------------- > Blocks are not getting replicate even DN's are availble. > -------------------------------------------------------- > > Key: HDFS-3586 > URL: https://issues.apache.org/jira/browse/HDFS-3586 > Project: Hadoop HDFS > Issue Type: Bug > Components: datanode, namenode > Affects Versions: 2.0.0-alpha, 3.0.0 > Reporter: Brahma Reddy Battula > Assignee: Brahma Reddy Battula > Attachments: HDFS-3586-analysis.txt > > > Scenario: > ========= > Started four DN's(Say DN1,DN2,DN3 and DN4) > writing files with RF=3.. > formed pipeline with DN1->DN2->DN3. > Since DN3 network is very slow.it's not able to send acks. > Again pipeline is fromed with DN1->DN2->DN4. > Here DN4 network is also slow. > So finally commitblocksync happend tp DN1 and DN2 successfully. > block present in all the four DN's(finalized state in two DN's and rbw state > in another DN's).. > Here NN is asking replicate to DN3 and DN4,but it's failing since replcia's > are already present in RBW dir. -- This message was sent by Atlassian JIRA (v6.3.4#6332)