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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.
    - assassinate
      Forcefully removes a dead node without re-replicating any data. Use as a last resort when you cannot successfully use nodetool removenode.
    - bootstrap resume
      Resumes the bootstrap process on one or more nodes.
    - decommission
      Causes a live node to decommission itself, streaming its data to the next node on the ring to replicate appropriately.
    - disablebinary
      Disables the native transport.
    - disablegossip
      Disables the gossip protocol.
    - drain
      Drains the node.
    - enablebinary
      Re-enables the native transport that defines the format of the binary messages.
    - enablegossip
      Re-enables gossip.
    - gossipinfo
      Returns the gossip information to discover broadcast protocol between nodes in a cluster.
    - invalidatecountercache
      Resets global counter cache parameter to save all keys from the counter cache.
    - invalidatekeycache
      Clears the key cache.
    - invalidaterowcache
      Invalidates the row cache.
    - join
      Joins the node to the ring.
    - move
      Moves the node on the token ring to a new token.
    - refresh
      Loads newly placed SSTables onto the system without a restart.
    - reloadtriggers
      Deprecated. Reloads trigger classes.
    - relocatesstables
      Rewrites any SSTable to correct disk.
    - removenode
      Returns the status of current node removal. Forces completion of pending removal or removes identified node.
    - replaybatchlog
      Forces batchlog to replay and blocks until batches have been replayed.
    - sequence
      Sequentially run multiple nodetool commands from a file, resource, or standard input (StdIn) sequentially.
    - sjk
      Runs Swiss Java Knife (SJK) commands to execute, troubleshoot, and monitor the database.
    - statusbinary
      Returns the status of native transport that defines the format of the binary message.
    - statusgossip
      Returns status of gossip.
    - stopdaemon
      Stops DataStax Enterprise daemon.
    - upgradesstables
      Rewrites SSTables for tables that are not running the current version of DataStax Enterprise.
  - 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.
  - 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.

Perform operations with nodetool commands

Use these nodetool commands for operations.

Use these nodetool commands for operations.

nodetool assassinate
Forcefully removes a dead node without re-replicating any data. Use as a last resort when you cannot successfully use nodetool removenode.
nodetool bootstrap resume
Resumes the bootstrap process on one or more nodes.
nodetool decommission
Causes a live node to decommission itself, streaming its data to the next node on the ring to replicate appropriately.
nodetool disablebinary
Disables the native transport.
nodetool disablegossip
Disables the gossip protocol.
nodetool drain
Drains the node.
nodetool enablebinary
Re-enables the native transport that defines the format of the binary messages.
nodetool enablegossip
Re-enables gossip.
nodetool gossipinfo
Returns the gossip information to discover broadcast protocol between nodes in a cluster.
nodetool invalidatecountercache
Resets global counter cache parameter to save all keys from the counter cache.
nodetool invalidatekeycache
Clears the key cache.
nodetool invalidaterowcache
Invalidates the row cache.
nodetool join
Joins the node to the ring.
nodetool move
Moves the node on the token ring to a new token.
nodetool refresh
Loads newly placed SSTables onto the system without a restart.
nodetool reloadtriggers
Deprecated. Reloads trigger classes.
nodetool relocatesstables
Rewrites any SSTable to correct disk.
nodetool removenode
Returns the status of current node removal. Forces completion of pending removal or removes identified node.
nodetool replaybatchlog
Forces batchlog to replay and blocks until batches have been replayed.
nodetool sequence
Sequentially run multiple nodetool commands from a file, resource, or standard input (StdIn) sequentially.
nodetool sjk
Runs Swiss Java Knife (SJK) commands to execute, troubleshoot, and monitor the database.
nodetool statusbinary
Returns the status of native transport that defines the format of the binary message.
nodetool statusgossip
Returns status of gossip.
nodetool stopdaemon
Stops DataStax Enterprise daemon.
nodetool upgradesstables
Rewrites SSTables for tables that are not running the current version of DataStax Enterprise.

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