[ https://issues.apache.org/jira/browse/TEZ-2881?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gopal V resolved TEZ-2881. -------------------------- Resolution: Not A Problem > Fix the InputBuffer bottleneck during the in-memory spill merge > --------------------------------------------------------------- > > Key: TEZ-2881 > URL: https://issues.apache.org/jira/browse/TEZ-2881 > Project: Apache Tez > Issue Type: Sub-task > Affects Versions: 0.8.0-alpha > Reporter: Gopal V > Assignee: Gopal V > > {code} > public void reset(ByteBuffer b, int start, int length) { > resize(length); > b.position(start); > b.get(buffer, 0, length); > super.reset(buffer, 0, length); > } > {code} > hits cpu-mem bandwidth & is mostly stalled waiting for the data. > Remove this dirty write and switch over to access buffers directly. -- This message was sent by Atlassian JIRA (v6.3.4#6332)