[jboss-jira] [JBoss JIRA] (JGRP-1990) Headers: use 1 array rather than 2

Headers: use 1 array rather than 2 ---------------------------------- Key: JGRP-1990 URL: https://issues.jboss.org/browse/JGRP-1990 Project: JGroups Issue Type: Enhancement Reporter: Bela Ban Assignee: Bela Ban Fix For: 3.6.7 Currently, {{Headers}} uses 1 array for ids and 1 for the actual headers. Experiment whether joining them into one array makes sense, e.g.: {noformat} | id-1 | hdr-1 | id-2 | hdr-2 | ... | id-n | hdr-n | {noformat} This saves 4 bytes (compressed OOPs) for an array ref, plus the overhead of the array itself. Plus, resizing only has to be applied to 1 array.