dsetool set_core_property

Sets the properties and values in the dse-search.properties resource for the search index.

Sets the properties and values in the dse-search.properties resource for the search index.

Synopsis

dsetool set_core_property keyspace_name.table_name 
shard.set.cover.finder=DYNAMIC|STATIC | 
shard.shuffling.strategy=HOST|QUERY|HOST_QUERY|RANDOM|SEED |
shard.set.cover.finder.inertia=inertia_integer
Table 1. Legend
Syntax conventions Description
UPPERCASE Literal keyword.
Lowercase Not literal.
Italics Variable value. Replace with a valid option or user-defined value.
[ ] Optional. Square brackets ( [ ] ) surround optional command arguments. Do not type the square brackets.
( ) Group. Parentheses ( ( ) ) identify a group to choose from. Do not type the parentheses.
| Or. A vertical bar ( | ) separates alternative elements. Type any one of the elements. Do not type the vertical bar.
... Repeatable. An ellipsis ( ... ) indicates that you can repeat the syntax element as often as required.
'Literal string' Single quotation ( ' ) marks must surround literal strings in CQL statements. Use single quotation marks to preserve upper case.
{ key:value } Map collection. Braces ( { } ) enclose map collections or key value pairs. A colon separates the key and the value.
<datatype1,datatype2> Set, list, map, or tuple. Angle brackets ( < > ) enclose data types in a set, list, map, or tuple. Separate the data types with a comma.
cql_statement; End CQL statement. A semicolon ( ; ) terminates all CQL statements.
[ -- ] Separate the command line options from the command arguments with two hyphens ( -- ). This syntax is useful when arguments might be mistaken for command line options.
' <schema> ... </schema> ' Search CQL only: Single quotation marks ( ' ) surround an entire XML schema declaration.
@xml_entity='xml_entity_type' Search CQL only: Identify the entity and literal value to overwrite the XML element in the schema and solrconfig files.
keyspace_name.table_name
Required. The keyspace and table names of the search index. Keyspace and table names are case-sensitive. Enclose names that contain uppercase in double quotation marks.
For shard.set.cover.finder:
DYNAMIC
Use randomization in token range and endpoint selection for load balancing. Default.
STATIC
Requires load balanced client. Suitable for 8+ vnodes. The same query on a node uses the same token ranges and endpoints. Creates fewer token filters, and has better performance than DYNAMIC.
When shard.set.cover.finder=DYNAMIC, values for shard.shuffling.strategy:
HOST
Shards are selected based on the host that received the query.
QUERY
Shards are selected based on the query string.
HOST_QUERY
Shards are selected by host x query.
RANDOM
Suitable only for 8 or fewer vnodes. Different random set of shards are selected with each request (default).
SEED
Selects the same shard from one query to another.
When shard.set.cover.finder=STATIC, values for shard.set.cover.finder.inertia:
inertia_integer
Increasing the inertia value from the default of 1 may improve performance for clusters with more than 1 vnode and more than 20 nodes. The default is appropriate for most workloads.

Examples

To not use randomization to select token ranges and endpoints:

dsetool set_core_property demo.health_data shard.set.cover.finder=STATIC

To use default randomization to select token ranges and endpoints:

dsetool set_core_property demo.health_data shard.set.cover.finder=RANDOM