• Glossary
  • Support
  • Downloads
  • DataStax Home
Get Live Help
Expand All
Collapse All

CQL for DSE

  • Overview
    • Cassandra structure
    • About CQL
    • CQL quick reference
    • Known issues
  • Getting started
    • Vector Search Quickstart
    • CQL Quickstart
    • SAI Quickstart
    • DSE Search Indexing Quick Start
  • Planning
    • Data modeling
      • Data modeling concepts
      • Data modeling analysis
  • Connecting
    • cqlsh (startup options)
      • Accessing data using CQL
        • Starting the standalone cqlsh tool
        • Starting cqlsh
    • Developing
      • Introduction to CQL
      • Managing keyspaces
        • Keyspace concepts
        • Create a keyspace
        • Check a keyspace
        • Alter a keyspace
        • Drop a keyspace
      • Managing tables
        • Table concepts
        • Data types
        • Create a table
        • Check a table
        • Alter a table
        • Truncate a table
        • Drop a table
      • Managing columns
        • Managing columns
        • Create a table column
        • Check column existence
        • Alter a table column
        • Drop a column
        • User-defined type (UDT) overview
          • Create a user-defined type (UDT)
          • Check for user-defined type (UDT) existence
          • Alter a user-defined type (UDT)
          • Drop a user-defined type (UDT)
        • User-defined functions (UDFs) and user-defined aggregates (UDAs) overview
          • Create a user-defined function (UDF)
          • Check a user-defined function (UDF)
          • Drop a user-defined function (UDF)
          • Create a user-defined aggregate function (UDA)
          • Checking a user-defined aggregate (UDA)
          • Drop a user-defined aggregate (UDA)
      • Managing Materialized views
        • Materialized views concepts
        • Known limitations of materialized views
        • Create a materialized view (MV)
        • Alter a materialized view (MV)
        • Drop a materialized view
        • Frequently asked questions about materialized views
      • Indexing Tables
        • Indexing concepts
        • Storage-Attached Indexing (SAI) Overview
          • SAI concepts
          • SAI Quickstart
          • SAI FAQ
          • Create SAI index
          • Alter SAI index
          • Drop SAI index
          • Querying with SAI
          • Configure SAI indexes
          • Monitor SAI indexes
          • SAI write path and read path
        • Secondary indexes (2i) overview
          • Secondary index (2i) concepts
          • When to use an index
          • Building and maintaining secondary indexes (2i)
          • Create a secondary index (2i)
            • Create a 2i on a collection column
          • Check secondary index (2i) existence
          • Alter a secondary index (2i)
          • Drop a secondary index (2i)
        • Search indexes overview
          • Search index commands
          • Adjusting timeout for index management
          • Creating a search index
          • Configuring search index joins
          • Joining cores
          • Reloading the search index
          • Removing a search index
          • Managing search index fields
            • Syntax for changing schema settings
            • Search index schema field types
            • Adding a new field type
            • Adding a column to the index
            • Indexing tuples and UDTs fields
              • Tuple configuration example
              • UDT configuration example
              • Nesting tuples and UDTs
              • Tuples and UDTs as CQL map values
            • Indexing map columns
            • Indexing a column for different analysis
            • Dropping columns from the index
          • Updating the index after data expires (TTL)
          • Inserting, updating, and deleting data
          • Search indexing examples
        • Search index examples
          • Search index examples
            • Creating a demo keyspace for tutorials
            • Indexing and querying polygons
      • Inserting and updating data
        • Insert simple data
        • Set column
        • List fields
        • Map fields
        • Tuple
        • User-defined type (UDT) column
        • Insert static data
        • UUID and timeuuid column
        • Date column
        • Time column
        • Timestamp column
        • Duration column
        • Update counter
        • Lightweight transactions (LWTs)
        • Inserting JSON formatted values
        • Batching inserts and updates
          • Batching inserts, updates, and deletes
          • Good use of BATCH statement
          • Misuse of BATCH statement
        • Importing data from a CSV file
        • Setting the time-to-live (TTL) for value
          • Inserting, updating, and deleting data
      • Deleting data
        • Deleting values from a column or entire row
        • Expiring data with time-to-live
        • Expiring data with TTL example
      • Querying and retrieving data
        • Using a SELECT statement
        • Restricting queries using WHERE clauses
          • Partition keys
          • Clustering columns
          • Retrieval using the IN keyword
          • Sorting and limiting results
        • Returning data from collection columns
        • Aggregating results
        • Using user-defined functions (UDF)
        • Applying user-defined aggregate (UDA) functions
          • Testing performance impact using tracing
        • Formatting query results as JSON
        • Retrieving the write timestamp
        • Using tracing
          • Tracing performance
        • DSE Search index querying
        • Search index filtering best practices
          • Search index syntax
          • search-index:si-query-syntax.adoc#siIndexedColumns
          • search-index:si-query-syntax.adoc#basicSolrSyntax
          • search-index:si-query-syntax.adoc#queriesJSON
          • search-index:si-query-syntax.adoc#siEscapeCharacters
        • Native CQL search queries
        • Identifying the partition key
        • Filtering on terms
          • Filtering on words, phrases, or substrings
          • Fuzzy search
        • UDT query examples
        • Querying a CQL collection set
        • Using date ranges in solr_query
        • Geospatial queries for Point and LineString
        • Spatial queries with polygons require JTS
        • Using dynamic fields
        • Limiting results and paging
        • Restricted query routing
    • Securing overview
      • Security quickstart
      • Using cqlsh with authentication
      • System tables for authentication and authorization
  • Cycling Examples
    • Setting up the cycling keyspace
    • User-defined types (UDTs)
      • basic_info
      • basic_info_withTTL
      • fullname
      • race
    • User-defined functions (UDFs) and user-defined aggregates (UDAs)
      • flog
      • left
      • average_state
      • average_final
      • Cycling user-defined aggregate team_average
    • Tables
      • birthday_list
      • calendar
      • comments
      • country_flag
      • cyclist_alt_stats
      • cyclist_base
      • cyclist_career_teams
      • cyclist_category
      • cyclist_emails
      • cyclist_expenses
      • cyclist_id
      • cyclist_name
      • cyclist_points
      • cyclist_races
      • cyclist_sponsors
      • cyclist_stats
      • cyclist_teams
      • events
      • popular_count
      • race_sponsors
      • race_starts
      • race_times
      • race_winners
      • rank_by_year_and_name
      • team_average
      • upcoming_calendar
    • Materialized views (MVs)
      • cyclist_by_age-mv
    • Search indexes
      • Search index examples
      • comments search index
    • SASI indexes
      • Index on cyclist_name
    • Access control
      • Cycling internal
    • Cycling queries
      • Aggregating cycling data
    • Reference
      • CQL quick reference
      • Understanding the CQL command syntax
      • Data types
        • Creating a blob column
        • Date, time, and timestamp format
        • Solr field type reference for DSE Search
      • Operators
      • CQL native functions
      • CQL native aggregates
      • System and virtual tables
        • System tables
          • Keyspace tables
          • Querying system tables
          • Functions, aggregates, and user types
        • Virtual tables
          • Virtual keyspaces and tables
          • Virtual tables for SAI indexes and SSTables
      • cqlsh (startup options)
        • Configuring a cqlshrc file
        • Starting cqlsh on a search node
      • CQL shell (cqlsh) reference
        • CAPTURE
        • CLEAR
        • CONSISTENCY
        • COPY TO
        • COPY FROM
        • DESCRIBE AGGREGATE
        • DESCRIBE CLUSTER
        • DESCRIBE SCHEMA
        • DESCRIBE FUNCTION
        • DESCRIBE INDEX
        • DESCRIBE KEYSPACE
        • DESCRIBE MATERIALIZED VIEW
        • DESCRIBE SEARCH INDEX
        • DESCRIBE TABLE
        • DESCRIBE TYPE
        • EXECUTE AS
        • EXPAND
        • EXIT
        • LOGIN
        • PAGING
        • SERIAL CONSISTENCY
        • SHOW
        • SOURCE
        • TIMING
        • TRACING
      • CQL commands
        • ALTER KEYSPACE
        • ALTER MATERIALIZED VIEW
        • ALTER ROLE
        • ALTER SEARCH INDEX CONFIG
        • ALTER SEARCH INDEX SCHEMA
        • ALTER TABLE
        • ALTER TYPE
        • ALTER USER (Deprecated)
        • BATCH
        • COMMIT SEARCH INDEX
        • CREATE AGGREGATE
        • CREATE CUSTOM INDEX
        • CREATE FUNCTION
        • CREATE INDEX
        • CREATE KEYSPACE
        • CREATE MATERIALIZED VIEW
        • CREATE ROLE
        • CREATE SEARCH INDEX
        • CREATE TABLE
        • CREATE TYPE
        • CREATE USER (Deprecated)
        • DELETE
        • DROP AGGREGATE
        • DROP FUNCTION
        • DROP INDEX
        • DROP KEYSPACE
        • DROP MATERIALIZED VIEW
        • DROP ROLE
        • DROP SEARCH INDEX
        • DROP TABLE
        • DROP TYPE
        • DROP USER (Deprecated)
        • GRANT
        • INSERT
        • LIST PERMISSIONS
        • LIST ROLES
        • LIST USERS (Deprecated)
        • REBUILD SEARCH INDEX
        • RELOAD SEARCH INDEX
        • RESTRICT
        • RESTRICT ROWS
        • REVOKE
        • SELECT
        • TRUNCATE
        • UNRESTRICT
        • UNRESTRICT ROWS
        • UPDATE
        • USE
  • CQL for DSE
  • Developing
  • Indexing Tables
  • Search indexes overview
  • Reloading the search index
Edit this Page

Reloading the search index

After you modify the search index schema, config, or upload custom resource files (like a synonym file), reload the search index to make the pending search index active.

Changing search index config

To create and make changes to the search index config, follow these basic steps:

  1. Create a search index. For example:

    CREATE SEARCH INDEX ON demo.health_data;
  2. Alter the search index. For example:

    ALTER SEARCH INDEX CONFIG ON demo.health_data SET autoCommitTime = 30000;
  3. Optionally view the XML of the pending search index. For example:

    DESCRIBE PENDING SEARCH INDEX CONFIG on demo.health_data;
  4. Make the pending changes active. For example:

    RELOAD SEARCH INDEX ON demo.health_data;

The CQL command RELOAD SEARCH INDEX rebuilds the search index.

For operations, you can optionally reload a search index (also called a search core) on a single node using dsetool reload_core.

If one or more nodes fail to reload the core in distributed operations, an error message indicates a list of the failing node or nodes. Issue the reload again only on those failing nodes using distributed=false.

Reindexing in place

Setting reindex=true and deleteAll=false reindexes data and keeps the existing index. During the uploading process, user searches yield inaccurate results. To perform an in-place reindex, use this syntax:

dsetool reload_core <keyspace_name>.<table_name> reindex=true deleteAll=false

Reindexing in full

Setting reindex=true and deleteAll=true deletes the index and reindexes the dataset. User searches initially return no or partial documents as the search cores reload and data is reindexed.

dsetool reload_core <keyspace_name>.<table_name> reindex=true deleteAll=true

During reindexing, a series of criteria routes sub-queries to the nodes most capable of handling them. See Shard routing for distributed queries.

Joining cores Removing a search index

General Inquiries: +1 (650) 389-6000 info@datastax.com

© DataStax | Privacy policy | Terms of use

DataStax, Titan, and TitanDB are registered trademarks of DataStax, Inc. and its subsidiaries in the United States and/or other countries.

Apache, Apache Cassandra, Cassandra, Apache Tomcat, Tomcat, Apache Lucene, Apache Solr, Apache Hadoop, Hadoop, Apache Pulsar, Pulsar, Apache Spark, Spark, Apache TinkerPop, TinkerPop, Apache Kafka and Kafka are either registered trademarks or trademarks of the Apache Software Foundation or its subsidiaries in Canada, the United States and/or other countries.

Kubernetes is the registered trademark of the Linux Foundation.

landing_page landingpage