hadoop-mapreduce-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Liu, Yi A" <yi.a....@intel.com>
Subject RE: replication factor in hdfs-site.xml
Date Thu, 28 Aug 2014 08:29:13 GMT
For 1#, since you still have 2 datanodes alive, and the replication is 2, writing  will success.
 (Read will success)
For 2#, now you only have 1 datanode, and the replication is 2, then initial writing will
success, but later sometime pipeline recovery will fail. 

Regards,
Yi Liu


-----Original Message-----
From: Satyam Singh [mailto:satyam.singh@ericsson.com] 
Sent: Thursday, August 28, 2014 3:01 PM
To: user@hadoop.apache.org
Subject: replication factor in hdfs-site.xml

Hi Users,



I want behaviour for hadoop cluster for writing/reading in following replication cases:

1. replication=2 and in cluster (3 datatnodes+namenode) one datanode gets down.
2. replication=2 and in cluster (3 datatnodes+namenode) 2 datanode gets down.


BR,
Satyam

Mime
View raw message