NOTE: You are looking at documentation for an older release. For the latest information, see the current release documentation.
The indexing buffer is used to store newly indexed documents. When it fills up, the documents in the buffer are written to a segment on disk. It is divided between all shards on the node.
The following settings are static and must be configured on every data node in the cluster:
Accepts either a percentage or a byte size value. It defaults to
10%, meaning that
10%of the total heap allocated to a node will be used as the indexing buffer size shared across all shards.
index_buffer_sizeis specified as a percentage, then this setting can be used to specify an absolute minimum. Defaults to
index_buffer_sizeis specified as a percentage, then this setting can be used to specify an absolute maximum. Defaults to unbounded.