VMware Continuent Documentation

Tungsten Replicator 3.0 Manual

VMware, Inc.


This manual documents Tungsten Replicator 3.0.

Build date: 2015-12-17

Up to date builds of this document: Tungsten Replicator 3.0 Manual (Online), Tungsten Replicator 3.0 Manual (PDF)

Table of Contents

1. Legal Notice
2. Conventions
3. Quickstart Guide
1. Introduction
1.1. Tungsten Replicator
1.1.1. Extractor
1.1.2. Appliers
1.1.3. Transaction History Log (THL)
1.1.4. Filtering
2. Deployment
2.1. Requirements
2.1.1. Operating Systems Support
2.1.2. Database Support
2.1.3. RAM Requirements
2.1.4. Disk Requirements
2.1.5. Java Requirements
2.1.6. Cloud Deployment Requirements
2.2. Deployment Sources
2.2.1. Using the TAR/GZipped files
2.2.2. Using the RPM and DEB package files
2.3. Deploying a Master/Slave Topology
2.3.1. Monitoring a Master/Slave Dataservice
2.4. Deploying a Multi-master Topology
2.4.1. Preparing Hosts for Multimaster
2.4.2. Installing Multimaster Deployments
2.4.3. Management and Monitoring of Multimaster Deployments
2.4.4. Alternative Multimaster Deployments
2.5. Deploying a Fan-In Topology
2.5.1. Management and Monitoring Fan-in Deployments
2.6. Deploying a Star Topology
2.6.1. Management and Monitoring of Star Topology Deployments
2.7. Additional Configuration and Deployment Options
2.7.1. Deploying Multiple Replicators on a Single Host
2.8. Replicating Data Into an Existing Dataservice
2.9. Removing Datasources from a Deployment
2.9.1. Removing a Datasource from an Existing Deployment
2.10. Starting and Stopping Tungsten Replicator
2.11. Configuring Startup on Boot
2.12. Upgrading Tungsten Replicator
2.12.1. Upgrading Installations using update
2.12.2. Upgrading Tungsten Replicator to use tpm
2.12.3. Upgrading Tungsten Replicator using tpm
2.12.4. Installing an Upgraded JAR Patch
3. Heterogenous Deployments
3.1. How Heterogeneous Replication Works
3.1. MySQL to Oracle, Oracle to MySQL, and Oracle to Oracle Replication
3.1. Native Applier Replication (e.g. MongoDB)
3.1. Batch Loading
3.1. Schema Creation and Replication
3.2. Deploying Oracle Replication
3.2.1. How Oracle Extraction Works
3.2.2. Data Type Differences and Limitations
3.2.3. Creating a MySQL to Oracle Deployment
3.2.4. Creating an Oracle to MySQL Deployment
3.2.5. Creating an Oracle to Oracle Deployment
3.2.6. Deployment with Provisioning
3.2.7. Updating CDC after Schema Changes
3.2.8. CDC Cleanup and Correction
3.2.9. Tuning CDC Extraction
3.2.10. Troubleshooting Oracle Deployments
3.3. Deploying MySQL to Hadoop Replication
3.3.1. Hadoop Replication Operation
3.3.2. Preparing Hosts for Hadoop Replication
3.3.3. Installing Hadoop Replication
3.3.4. Generating Materialized Views
3.3.5. Accessing Generated Tables in Hive
3.3.6. Management and Monitoring of Hadoop Deployments
3.4. Deploying MySQL to Amazon RedShift Replication
3.4.1. RedShift Replication Operation
3.4.2. Preparing Hosts for Amazon RedShift Deployments
3.4.3. Installing Amazon RedShift Replication
3.4.4. Verifying your RedShift Installation
3.4.5. Keeping CDC Information
3.4.6. Management and Monitoring of Amazon RedShift Deployments
3.4.7. Troubleshooting Amazon RedShift Installations
3.5. Deploying MySQL to Vertica Replication
3.5.1. Preparing Hosts for Vertica Deployments
3.5.2. Installing Vertica Replication
3.5.3. Management and Monitoring of Vertica Deployments
3.5.4. Troubleshooting Vertica Installations
4. Advanced Deployments
4.1. Migrating and Seeding Data
4.1.1. Migrating from MySQL Native Replication 'In-Place'
4.1.2. Migrating from MySQL Native Replication Using a New Service
4.1.3. Seeding Data through MySQL
4.1.4. Seeding Data through tungsten_provision_thl
4.2. Deploying Parallel Replication
4.2.1. Application Prerequisites for Parallel Replication
4.2.2. Enabling Parallel Apply
4.2.3. Channels
4.2.4. Disk vs. Memory Parallel Queues
4.2.5. Parallel Replication and Offline Operation
4.2.6. Adjusting Parallel Replication After Installation
4.2.7. Monitoring Parallel Replication
4.2.8. Controlling Assignment of Shards to Channels
4.3. Batch Loading for Data Warehouses
4.3.1. How It Works
4.3.2. Important Limitations
4.3.3. Batch Applier Setup
4.3.4. JavaScript Batchloader Scripts
4.3.5. Staging Tables
4.3.6. Character Sets
4.3.7. Time Zones
4.4. Using the Parallel Extractor
4.4.1. Advanced Configuration Parameters
4.5. Deploying SSL Secured Replication and Administration
4.5.1. Creating the Truststore and Keystore
4.5.2. SSL and Administration Authentication
4.5.3. Configuring the Secure Service through tpm
4.5.4. Connector SSL Example Procedure
5. Operations Guide
5.1. Checking Replication Status
5.1.1. Understanding Replicator States
5.1.2. Replicator States During Operations
5.1.3. Changing Replicator States
5.2. Managing Transaction Failures
5.2.1. Identifying a Transaction Mismatch
5.2.2. Skipping Transactions
5.3. Deploying Automatic Replicator Recovery
5.4. Provision or Reprovision a Slave
5.5. Creating a Backup
5.5.1. Using a Different Backup Tool
5.5.2. Using a Different Directory Location
5.5.3. Creating an External Backup
5.6. Restoring a Backup
5.6.1. Restoring a Specific Backup
5.6.2. Restoring an External Backup
5.6.3. Restoring from Another Slave
5.6.4. Manually Recovering from Another Slave
5.7. Switching Master Hosts
5.8. Configuring Parallel Replication
5.9. Performing Database or OS Maintenance
5.9.1. Performing Maintenance on a Single Slave
5.9.2. Performing Maintenance on a Master
5.9.3. Performing Maintenance on an Entire Dataservice
5.9.4. Upgrading or Updating your JVM
5.10. Making Online Schema Changes
6. Command-line Tools
6.1. The check_tungsten_services Command
6.2. The check_tungsten_online Command
6.3. The check_tungsten_latency Command
6.4. The ddlscan Command
6.4.1. Optional Arguments
6.4.2. Supported Templates and Usage
6.5. The load-reduce-check Tool
6.5.1. Generating Staging DDL
6.5.2. Generating Live DDL
6.5.3. Materializing a View
6.5.4. Compare Loaded Data
6.6. The materialize Command
6.7. The multi_trepctl Command
6.7.1. multi_trepctl Options
6.7.2. multi_trepctl Commands
6.8. The setupCDC.sh Command
6.9. The thl Command
6.9.1. thl list Command
6.9.2. thl index Command
6.9.3. thl purge Command
6.9.4. thl info Command
6.9.5. thl help Command
6.10. The tpm Command
6.10.1. Comparing Staging and INI tpm Methods
6.10.2. Processing Installs and Upgrades
6.10.3. tpm Staging Configuration
6.10.4. tpm INI File Configuration
6.10.5. tpm Commands
6.10.6. tpm Configuration Options
6.10.7. Troubleshooting
6.11. The trepctl Command
6.11.1. trepctl Options
6.11.2. trepctl Global Commands
6.11.3. trepctl Service Commands
6.12. The tungsten_provision_slave Script
6.13. The tungsten_provision_thl Command
6.13.1. tungsten_provision_thl Reference
6.14. The tungsten_read_master_events Script
6.15. The tungsten_set_position Script
6.16. The updateCDC.sh Command
7. Replication Filters
7.1. Enabling/Disabling Filters
7.2. Enabling Additional Filters
7.3. Filter Status
7.4. Filter Reference
7.4.1. BidiRemoteSlave Filter
7.4.2. BuildAuditTable Filter
7.4.3. BuildIndexTable Filter
7.4.4. CaseMapping Filter
7.4.5. CDCMetadata Filter
7.4.6. ColumnName Filter
7.4.7. ConsistencyCheck Filter
7.4.8. DatabaseTransform Filter
7.4.9. Dummy Filter
7.4.10. EnumToString Filter
7.4.11. EventMetadata Filter
7.4.12. Heartbeat Filter
7.4.13. Logging Filter
7.4.14. MySQLSessionSupport Filter
7.4.15. NetworkClient Filter
7.4.16. OptimizeUpdates Filter
7.4.17. PrimaryKey Filter
7.4.18. PrintEvent Filter
7.4.19. Rename Filter
7.4.20. ReplicateColumns Filter
7.4.21. Replicate Filter
7.4.22. SetToString Filter
7.4.23. Shard Filter
7.4.24. TimeDelay Filter
7.5. JavaScript Filters
7.5.1. Writing JavaScript Filters
7.5.2. JavaScript Filter Reference
8. Performance and Tuning
8.1. Block Commit
8.1.1. Monitoring Block Commit Status
8.2. Improving Network Performance
9. Configuration Files and Format
9.1. Replicator Configuration Properties
A. Troubleshooting
A.1. Contacting Support
A.1. Creating a Support Account
A.1. Generating Diagnostic Information
A.1. Open a Support Ticket
A.1. Open a Support Ticket via Email
A.1. Getting Updates for all Company Support Tickets
A.2. Error/Cause/Solution
A.2.1. Too many open processes or files
A.2.2. OptimizeUpdatesFilter cannot filter, because column and key count is different. Make sure that it is defined before filters which remove keys (eg. PrimaryKeyFilter).
A.2.3. Unable to update the configuration of an installed directory
A.2.4. 'subscription exists' when setting up CDC on Oracle
A.2.5. MySQLExtractException: unknown data type 0
A.2.6. The session variable SQL_MODE when set to include ALLOW_INVALID_DATES does not apply statements correctly on the slave.
A.3. Known Issues
A.3.1. Triggers
A.4. Troubleshooting Timeouts
A.5. Troubleshooting Backups
A.6. Running Out of Diskspace
A.7. Troubleshooting SSH and tpm
A.8. Troubleshooting Data Differences
A.9. Comparing Table Data
A.10. Troubleshooting Memory Usage
B. Release Notes
B.1. Tungsten Replicator 3.0.1 GA (19 Dec 2014)
B.2. Tungsten Replicator 3.0.0 GA (18 Nov 2014)
C. Prerequisites
C.1. Staging Host Configuration
C.2. Host Configuration
C.2.1. Creating the User Environment
C.2.2. Configuring Network and SSH Environment
C.2.3. Directory Locations and Configuration
C.2.4. Configure Software
C.2.5. sudo Configuration
C.3. MySQL Database Setup
C.3.1. MySQL Configuration
C.3.2. MySQL User Configuration
C.3.3. MySQL Unprivileged Users
C.4. Oracle Database Setup
C.4.1. Oracle Environment Variables
D. Terminology Reference
D.1. Transaction History Log (THL)
D.1.1. THL Format
D.2. Generated Field Reference
D.2.1. Terminology: Fields accessFailures
D.2.2. Terminology: Fields active
D.2.3. Terminology: Fields activeSeqno
D.2.4. Terminology: Fields appliedLastEventId
D.2.5. Terminology: Fields appliedLastSeqno
D.2.6. Terminology: Fields appliedLatency
D.2.7. Terminology: Fields applier.class
D.2.8. Terminology: Fields applier.name
D.2.9. Terminology: Fields applyTime
D.2.10. Terminology: Fields autoRecoveryEnabled
D.2.11. Terminology: Fields autoRecoveryTotal
D.2.12. Terminology: Fields averageBlockSize
D.2.13. Terminology: Fields blockCommitRowCount
D.2.14. Terminology: Fields cancelled
D.2.15. Terminology: Fields channel
D.2.16. Terminology: Fields channels
D.2.17. Terminology: Fields clusterName
D.2.18. Terminology: Fields commits
D.2.19. Terminology: Fields committedMinSeqno
D.2.20. Terminology: Fields criticalPartition
D.2.21. Terminology: Fields currentBlockSize
D.2.22. Terminology: Fields currentEventId
D.2.23. Terminology: Fields currentLastEventId
D.2.24. Terminology: Fields currentLastFragno
D.2.25. Terminology: Fields currentLastSeqno
D.2.26. Terminology: Fields currentTimeMillis
D.2.27. Terminology: Fields dataServerHost
D.2.28. Terminology: Fields discardCount
D.2.29. Terminology: Fields doChecksum
D.2.30. Terminology: Fields estimatedOfflineInterval
D.2.31. Terminology: Fields eventCount
D.2.32. Terminology: Fields extensions
D.2.33. Terminology: Fields extractTime
D.2.34. Terminology: Fields extractor.class
D.2.35. Terminology: Fields extractor.name
D.2.36. Terminology: Fields filter.#.class
D.2.37. Terminology: Fields filter.#.name
D.2.38. Terminology: Fields filterTime
D.2.39. Terminology: Fields flushIntervalMillis
D.2.40. Terminology: Fields fsyncOnFlush
D.2.41. Terminology: Fields headSeqno
D.2.42. Terminology: Fields intervalGuard
D.2.43. Terminology: Fields lastCommittedBlockSize
D.2.44. Terminology: Fields lastCommittedBlockTime
D.2.45. Terminology: Fields latestEpochNumber
D.2.46. Terminology: Fields logConnectionTimeout
D.2.47. Terminology: Fields logDir
D.2.48. Terminology: Fields logFileRetainMillis
D.2.49. Terminology: Fields logFileSize
D.2.50. Terminology: Fields masterConnectUri
D.2.51. Terminology: Fields masterListenUri
D.2.52. Terminology: Fields maxChannel
D.2.53. Terminology: Fields maxDelayInterval
D.2.54. Terminology: Fields maxOfflineInterval
D.2.55. Terminology: Fields maxSize
D.2.56. Terminology: Fields maximumStoredSeqNo
D.2.57. Terminology: Fields minimumStoredSeqNo
D.2.58. Terminology: Fields name
D.2.59. Terminology: Fields offlineRequests
D.2.60. Terminology: Fields otherTime
D.2.61. Terminology: Fields pendingError
D.2.62. Terminology: Fields pendingErrorCode
D.2.63. Terminology: Fields pendingErrorEventId
D.2.64. Terminology: Fields pendingErrorSeqno
D.2.65. Terminology: Fields pendingExceptionMessage
D.2.66. Terminology: Fields pipelineSource
D.2.67. Terminology: Fields processedMinSeqno
D.2.68. Terminology: Fields queues
D.2.69. Terminology: Fields readOnly
D.2.70. Terminology: Fields relativeLatency
D.2.71. Terminology: Fields resourcePrecedence
D.2.72. Terminology: Fields rmiPort
D.2.73. Terminology: Fields role
D.2.74. Terminology: Fields seqnoType
D.2.75. Terminology: Fields serializationCount
D.2.76. Terminology: Fields serialized
D.2.77. Terminology: Fields serviceName
D.2.78. Terminology: Fields serviceType
D.2.79. Terminology: Fields shard_id
D.2.80. Terminology: Fields simpleServiceName
D.2.81. Terminology: Fields siteName
D.2.82. Terminology: Fields sourceId
D.2.83. Terminology: Fields stage
D.2.84. Terminology: Fields started
D.2.85. Terminology: Fields state
D.2.86. Terminology: Fields stopRequested
D.2.87. Terminology: Fields store.#
D.2.88. Terminology: Fields storeClass
D.2.89. Terminology: Fields syncInterval
D.2.90. Terminology: Fields taskCount
D.2.91. Terminology: Fields taskId
D.2.92. Terminology: Fields timeInStateSeconds
D.2.93. Terminology: Fields timeoutMillis
D.2.94. Terminology: Fields totalAssignments
D.2.95. Terminology: Fields transitioningTo
D.2.96. Terminology: Fields uptimeSeconds
D.2.97. Terminology: Fields version
E. Files, Directories, and Environment
E.1. The Tungsten Replicator Install Directory
E.1.1. The backups Directory
E.1.2. The releases Directory
E.1.3. The service_logs Directory
E.1.4. The thl Directory
E.1.5. The tungsten Directory
E.2. Environment Variables
F. Internals
F.1. Extending Backup and Restore Behavior
F.1.1. Backup Behavior
F.1.2. Restore Behavior
F.1.3. Writing a Custom Backup/Restore Script
F.1.4. Enabling a Custom Backup Script
F.2. Character Sets in Database and Tungsten Replicator
F.3. Replication of Date/Time Values
F.3. Best Practices
F.4. Memory Tuning and Performance
F.4.1. Understanding Tungsten Replicator Memory Tuning
G. Frequently Asked Questions (FAQ)
H. Ecosystem Support
H.1. Continuent Github Repositories
H.2. Managing Log Files with logrotate
H.3. Monitoring Status Using cacti
H.4. Monitoring Status Using nagios