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DSE 6.7 Developer Guide (EOSL)

Getting started
Information about developing applications for DataStax Enterprise.
Release notes
Release notes for DataStax Enterprise.
Installing
DataStax Enterprise 6.7 can be installed in a number of ways, depending on the purpose of the installation, the type of operating system, and the available permissions.
Configuration
Information about configuring DataStax Enterprise, such as recommended production setting, configuration files, snitch configuration, start-up parameters, heap dump settings, using virtual nodes, and more.
DSE advanced functionality
Information on using DSE Analytics, DSE Search, DSE Graph, DSEFS (DataStax Enterprise file system), and DSE Advanced Replication.
Developing applications with DataStax drivers
The DataStax drivers are the primary resource for application developers creating solutions using DataStax Enterprise (DSE).
Tools
Tools include nodetool, dse, and dsefs shell commands, dsetool, fs-stress tool, pre-flight check, and yaml_diff tools, and the sstableloader.
- DSE Metrics Collector
  DSE Metrics Collector aggregates DSE metrics and integrates with centralized monitoring solutions to facilitate problem resolution and remediation.
- nodetool
  Available commands for monitoring a cluster and performing routine database operations.
  - Get information
    Use these nodetool commands to get information about your clusters and nodes.
  - Collect metrics
    Use these nodetool commands to collect metrics from your clusters and nodes.
  - Perform operations
    Use these nodetool commands for operations.
  - Adjust settings
    Use these nodetool commands to adjust settings.
  - Diagnose issues
    Use these nodetool commands to manage diagnostics.
  - Manage backup commands
    Use these nodetool commands to manage backups, including snapshots and incremental backup.
  - Ensure data consistency
    Use these nodetool commands to ensure data consistency and manage table repairs.
  - Manage compaction
    Use these nodetool commands for compaction.
    - compact
      Forces a major compaction on one or more tables or given SSTables.
    - compactionhistory
      Prints history of compaction.
    - compactionstats
      Prints statistics about compactions.
    - disableautocompaction
      Disables autocompaction for a keyspace and one or more tables.
    - enableautocompaction
      Enables autocompaction for a keyspace and one or more tables, or all tables.
    - garbagecollect
      Removes deleted data from one or more tables.
    - getcompactionthreshold
      Prints minimum and maximum compaction thresholds for a given table.
    - getcompactionthroughput
      Prints the compaction throughput in megabytes (MBs) per second.
    - getconcurrentcompactors
      Gets the number of concurrent compactors in the system.
    - setcompactionthreshold
      Sets minimum and maximum compaction thresholds for a table.
    - setcompactionthroughput
      Sets the throughput capacity for compaction in the system, or disables throttling.
    - setconcurrentcompactors
      Sets number of concurrent compactors.
    - stop
      Stops compaction.
  - Manage NodeSync service
    Manage the NodeSync service on the connected node.
  - Manage hints
    Use these nodetool commands for managing hints.
- dse commands
  The dse commands for starting the database and connecting an external client to a DataStax Enterprise node and performing common utility tasks.
- dsefs shell commands
  The DSEFS functionality supports operations including uploading, downloading, moving, and deleting files, creating directories, and verifying the DSEFS status.
- dsetool
  A list of the available commands for DSE operations.
- Stress tools
  Tools for stress testing DataStax Enterprise.
- SSTable tools
  Available diagnostic tools for analyzing, using, upgrading, and changing DataStax Enterprise SSTables.
- Preflight check tool
  The preflight check tool is a collection of tests that detects and optionally fixes configuration settings on DataStax Enterprise nodes.
- Compare yaml files
  cluster_check and yaml_diff compare the differences between cassandra.yaml or dse.yaml files.
Operations
DataStax Enterprise operation topics, such as node and datacenter operations, changing replication strategies, configuring compaction and compression, caching, and tuning Bloom filters.
CQL
CQL (Cassandra Query Language) is a query language for the DataStax Enterprise database.

Manage compaction using nodetool commands

Use these nodetool commands for compaction.

Use these nodetool commands for compaction.

nodetool compact
Forces a major compaction on one or more tables or given SSTables.
nodetool compactionhistory
Prints history of compaction.
nodetool compactionstats
Prints statistics about compactions.
nodetool disableautocompaction
Disables autocompaction for a keyspace and one or more tables.
nodetool enableautocompaction
Enables autocompaction for a keyspace and one or more tables, or all tables.
nodetool garbagecollect
Removes deleted data from one or more tables.
nodetool getcompactionthreshold
Prints minimum and maximum compaction thresholds for a given table.
nodetool getcompactionthroughput
Prints the compaction throughput in megabytes (MBs) per second.
nodetool getconcurrentcompactors
Gets the number of concurrent compactors in the system.
nodetool setcompactionthreshold
Sets minimum and maximum compaction thresholds for a table.
nodetool setcompactionthroughput
Sets the throughput capacity for compaction in the system, or disables throttling.
nodetool setconcurrentcompactors
Sets number of concurrent compactors.
nodetool stop
Stops compaction.

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