Yi Liu created HADOOP-11961: ------------------------------- Summary: Add isLinear interface to Erasure coder Key: HADOOP-11961 URL: https://issues.apache.org/jira/browse/HADOOP-11961 Project: Hadoop Common Issue Type: Sub-task Reporter: Yi Liu Assignee: Yi Liu
Today, we have a discussion including [~zhz], [~drankye], etc., also discuss in HDFS-8347. Some coder like {{RS}} and {{XOR}} is linear, some have coding boundary like HitchHicker. If the coder is linear, we can decode at any size, and we don't need to padding inputs to *chunksize*, if the coder is not linear, the inputs need to padding to *chunksize*, then do decode. This interface is important for performance, and can save memory/disk space since the parity cells are the same as first data cell (less than codec chunksize). -- This message was sent by Atlassian JIRA (v6.3.4#6332)