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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.
  - Manage NodeSync service
    Manage the NodeSync service on the connected node.
  - Manage hints
    Use these nodetool commands for managing hints.
    - disablehandoff
      Disables storing hinted handoffs.
    - disablehintsfordc
      Disables hints for a datacenter.
    - enablehandoff
      Reenables storing of future hints on the current node.
    - enablehintsfordc
      Turns on hints for a datacenter that was previously disabled with nodetool disablehintsfordc.
    - gethintedhandoffthrottlekb
      Gets the hinted handoff throttle in KB/sec per delivery thread.
    - getmaxhintwindow
      Prints the maximum time that the database generates hints for an unresponsive node.
    - handoffwindow
      Prints current hinted handoff window.
    - listendpointspendinghints
      Prints information about hints that the node has for other nodes.
    - pausehandoff
      Pauses the hints delivery process.
    - resumehandoff
      Resumes hints delivery process.
    - sethintedhandoffthrottlekb
      Sets hinted handoff throttle in KB/sec per delivery thread.
    - setmaxhintwindow
      Sets the maximum time that the database generates hints for an unresponsive node.
    - statushandoff
      Provides status of storing future hints.
    - truncatehints
      Truncates all hints on the local node or for one or more endpoints.
- 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 hints using nodetool commands

Use these nodetool commands for managing hints.

Use these nodetool commands for managing hints.

nodetool disablehandoff
Disables storing hinted handoffs.
nodetool disablehintsfordc
Disables hints for a datacenter.
nodetool enablehandoff
Reenables storing of future hints on the current node.
nodetool enablehintsfordc
Turns on hints for a datacenter that was previously disabled with nodetool disablehintsfordc.
nodetool gethintedhandoffthrottlekb
Gets the hinted handoff throttle in KB/sec per delivery thread.
nodetool getmaxhintwindow
Prints the maximum time that the database generates hints for an unresponsive node.
nodetool handoffwindow
Prints current hinted handoff window.
nodetool listendpointspendinghints
Prints information about hints that the node has for other nodes.
nodetool pausehandoff
Pauses the hints delivery process.
nodetool resumehandoff
Resumes hints delivery process.
nodetool sethintedhandoffthrottlekb
Sets hinted handoff throttle in KB/sec per delivery thread.
nodetool setmaxhintwindow
Sets the maximum time that the database generates hints for an unresponsive node.
nodetool statushandoff
Provides status of storing future hints.
nodetool truncatehints
Truncates all hints on the local node or for one or more endpoints.

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