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CQL

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DataStax Distribution of Apache Cassandra™ 3.11 Latest DDAC patch: 5.1.19

Getting started for Administrators
Information about using DataStax Distribution of Apache Cassandra™ (DDAC) for Administrators.
Getting started for developers
Information about developing applications for the DataStax Distribution of Apache Cassandra.
DDAC FAQ
Frequently asked questions about DataStax Distribution of Apache Cassandra 3.11.
Release notes
DataStax Distribution of Apache Cassandra release notes cover cluster requirements, upgrade guidance, security updates, changes and enhancements, issues, and resolved issues.
Database architecture
Important information for understanding how the DataStax Distribution of Apache Cassandra™ 3.11 database works.
Database internals
Information about the DataStax Distribution of Apache Cassandra 3.11 database.
Installing Cassandra
DataStax provides a binary tarball for installing the DataStax Distribution of Apache Cassandra 3.11.
Configuration
Information about configuring DataStax Distribution of Apache Cassandra 3.11, such as recommended production setting, configuration files, snitch configuration, start-up parameters, heap dump settings, using virtual nodes, and more.
Initializing a cluster
Initializing a Cassandra cluster includes configuring, and choosing how the data is divided across the nodes in the cluster.
Security
Security guide for DataStax Distribution of Apache Cassandra 3.11.
Tools
Tools include nodetool, cfs-stress tool, and the sstableloader.
- nodetool
  A list of the available commands for managing a cluster.
- Stress tools
  Tools for stress testing DataStax Distribution of Apache Cassandra 3.11.
- SSTable utilities
  Tools for using, upgrading, and changing Cassandra SSTables.
  - sstabledump
    Dumps contents of given SSTable to standard output in JSON format.
  - sstableexpiredblockers
    A diagnostic tool that reveals blocking SSTables that prevent an SSTable from dropping.
  - sstablelevelreset
    Resets the level to zero on a set of SSTables.
  - sstableloader
    Bulk loads external data into a cluster, load existing SSTables into another cluster with a different number of nodes or replication strategy, and restore snapshots.
  - sstablemetadata
    Utility for printing metadata about a specified SSTable.
  - sstableofflinerelevel
    Relevels SSTables offline.
  - sstablepartitions
    Identifies large partitions of SSTables.
  - sstablerepairedset
    Utility for resetting the level to zero on a given set of SSTables.
  - sstablescrub
    An offline version of nodetool scrub. It attempts to remove the corrupted parts while preserving non-corrupted data.
  - sstablesplit
    Splits SSTables files into multiple SSTables of a maximum designated size.
  - sstableupgrade
    Upgrade the SSTables in the specified snapshot to match the DataStax Distribution of Apache Cassandra 3.11.
  - sstableutil
    Lists the SSTable files for a designated table.
  - sstableverify
    Verifies the SSTable for a designated table.
Operations
DataStax Distribution of Apache Cassandra 3.11 operation topics, such as node and datacenter operations, changing replication strategies, configuring compaction and compression, caching, and tuning Bloom filters.
Planning
Hardware selection, estimating disk capacity, anti-patterns, cluster testing and more.
CQL
CQL (Cassandra Query Language) is a query language for the DataStax Distribution of Apache Cassandra 3.11 database.

SSTable utilities

Tools for using, upgrading, and changing Cassandra SSTables.

sstabledump
Dumps contents of given SSTable to standard output in JSON format.
sstableexpiredblockers
A diagnostic tool that reveals blocking SSTables that prevent an SSTable from dropping.
sstablelevelreset
Resets the level to zero on a set of SSTables.
sstableloader
Bulk loads external data into a cluster, load existing SSTables into another cluster with a different number of nodes or replication strategy, and restore snapshots.
sstablemetadata
Utility for printing metadata about a specified SSTable.
sstableofflinerelevel
Relevels SSTables offline.
sstablepartitions
Identifies large partitions of SSTables.
sstablerepairedset
Utility for resetting the level to zero on a given set of SSTables.
sstablescrub
An offline version of nodetool scrub. It attempts to remove the corrupted parts while preserving non-corrupted data.
sstablesplit
Splits SSTables files into multiple SSTables of a maximum designated size.
sstableupgrade
Upgrade the SSTables in the specified snapshot to match the DataStax Distribution of Apache Cassandra 3.11.
sstableutil
Lists the SSTable files for a designated table.
sstableverify
Verifies the SSTable for a designated table.

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