We need to increase VBMAP_HISTORY_SIZE, in order to certify using more than 10 buckets. We could have different maps for these buckets , perhaps due to differing num_replicas, so we need the capability to store more than 10 past maps in vbucket_map_history in order to support delta recovery of buckets over 10 in number. We need to increase VBMAP_HISTORY_SIZE field or perhaps make it dynamic and/or configurable.
Alternatively, we can have a per bucket vbucket_map_history.
|For Gerrit Dashboard: MB-33365|
|111060,4||MB-33381,MB-33365: Don't lose vbmaps required for delta recovery||master||ns_server||Status: MERGED||+2||+1|