Managing the index merge policy for the data domain

This section describes how to set and manage a merge policy for each Endeca data domain.

Using a merge policy for incremental index updates
A merge policy determines how frequently the Dgraph process of the Endeca data domain merges incremental update generations in its index files, for a specific data domain.
Types of merge policies
You can set the merge policy to one of two settings: balanced or aggressive.
Setting the merge policy
You can programmatically set the merge policy for the data domain by updating the Global Configuration Record.
Retrieving the merge policy
You can retrieve the Global Configuration Record to see the current setting for the merge policy.
Changing the merge policy
The URL /admin/dataDomainName?op=merge command can be used to change the merge policy of a running Endeca data domain.
Forcing a merge
The URL /admin/dataDomainName?op=merge command can also be used to force a merge.
Linux ulimit command for merges
For purposes of generation merging, it is recommended that you set the ulimit -v and -m parameters to unlimited.