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sh.splitFind()

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  • Definition
  • Consideration
  • Example
sh.splitFind(namespace, query)

Splits the chunk that contains the shard key value specified by the query at the chunk's median point. sh.splitFind() creates two roughly equal chunks. To split a chunk at a specific point instead, see sh.splitAt().

Important

mongosh Method

This page documents a mongosh method. This is not the documentation for database commands or language-specific drivers, such as Node.js.

For the database command, see the split command.

For MongoDB API drivers, refer to the language-specific MongoDB driver documentation.

For the legacy mongo shell documentation, refer to the documentation for the corresponding MongoDB Server release:

mongo shell v4.4

The method takes the following arguments:

Parameter
Type
Description
namespace
string
The namespace (i.e. <database>.<collection>) of the sharded collection that contains the chunk to split.
query
document
A query document that specifies the shard key value that determines the chunk to split.

The sh.splitFind() method wraps the split command.

In most circumstances, you should leave chunk splitting to the automated processes within MongoDB.

To use sh.splitFind(), the sharded collection must be populated.

For the sharded collection test.foo, the following example splits, at the median point, a chunk that contains the shard key value x: 70.

sh.splitFind( "test.foo", { x: 70 } )
←  sh.splitAt()sh.startAutoMerger() →