Change Log

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Change Log
This page will document all the changes to TigerGraph product including New Features and Bug Fixes.
Distributed Graph support and certain other enterprise-level features are available in the Enterprise Edition only.  They do not pertain to the Developer Edition. MultiGraph is now included in the Developer Edition.
Documentation Changes
07/02/20 RESTPP Built-in Endpoints - Corrected the URL for the GET Schema REST endpoint
07/02/20 Vertex Functions - Clarified the behavior of outdegree()
TigerGraph 2.6.5
Release Date: 2021-01-15
Enhancements:
Database Server
GSE/GPE segment consistency check utility
Integration with GSE/GPE consistency check utility with Backup/Restore
Changes
Increase in refresh timeout for RESTPP from 20 to 60 seconds;
Fixed
Database Server
GSE replica synchronization for Zookeeper errors 
Explicitly check replica follower status before automatic promotion to leader is allowed
RESTPP fix - memory leaks caused by timed out queries
Backup/Restore: Ensure GPE and GSE snapshots are done in correct order
TigerGraph 2.6.4
Release Date: 2020-11-02
Enhancements 
Database Server
Allow RESTPP to manage log files based on timestamp
Upgrade NGINX to 1.18 version
Correct status code to indicate GSQL operation result
Remove Hard timeout limit for Backup/Restore operations
Token Management Improvements:
Improve GSQL stability by setting a limit on number of tokens allowed
Logging improvement to indicate new and refreshed tokens separately
Fixed
Database Server
Core: GSE follower replicas lag leader replica on the data updates
Core: Shuffle abort causing GPE crash
Core: Handle un-released lock gracefully during json print command failure
Core: Incremental Snapshot triggers creation of all segments causing delays
Core: Kafka loading fails when number of loaders exceed 10
GSQL: Query Install fails for batch installs
Backup/Restore hangs if there are too many files
TigerGraph 2.6.3
Release Date 2020-08-21
Enhancements
Improved handling of query time outs for distributed queries. 
Fixed
Longer timeout for retrieving large memory map for attributes of STRING COMPRESS data type with large number of distinct values.
Backup jobs report incorrect successful runs
Incorrect type check logic for trim function;
TigerGraph 2.6.2
Release Date 2020-08-14
Enhancements
Improvements to GSE Upsert performance
Add User Id information to RESTPP logs for all user initiated calls
Improvements to Query Installation performance time
Provide warning message when revoking a role from proxy user if needed
Fixed
Core: GPE crash on unknown vertex / segment
Core: PostWriter needs to skip vertices if the internal vertex id is invalid one.
Core: Handle exception in ResponseThread of RemoteTopology
Core: Query re-installation issue caused by non-deterministic transformation
Core: Address Data Loading speed for hub loading
Core: Inconsistent result with and without using local accumulators
Core: RestPP payload scale issue due to 3rd party FCGI library
GSQL: GSQL pattern match - translation error when vertex type is the keyword "ANY"
GSQL: Issue with reduce function with Bitwise OR operator in the LOAD functions
GSQL: gsql_client strips out newlines when writing gsql queries by pasting into gsql shell
GSQL: Secrets and token associated with a graph and not removed during graph delete
GraphStudio: Displaying attribute for raw type in visualization should not use JSON stringify method
TigerGraph 2.6.1
Enhancements
Allow concurrent user query access during  Query Installation
GPE & GSE Data Sync Check Utility
Use of POST for /requesttoken API so that user password is not exposed 
Write Performance improvements
Error handling and reporting improvements for Query Timeout and Failures
UX improvement for ‘Clear Graph’ command in GraphStudio 
Fixed
Ensure cleanup and  compaction of delta records in a large transaction even in the event of TigerGraph service restart
Performance improvement to make Graph Updates faster by parallelizing and sharing transaction
Fix for the leftover Shuffle threads after Query Abort/Timeout
Change in the error message of AbortQuery request inside the Shuffle Operator
Bug fixes for GSE compaction feature to address exporting with mixed segments of data and  load data from the database in worker mode
Fix for GSE crash triggered by schema change
Enable background thread on JEMALLOC for memory cleanup even when system is idle
/showprocesslist and /abortquery APIs do not list the running queries of old worker if RESTPP is refreshed
S3 loader header check doesn't apply file filter regex
GSQL V2 syntax does not handle ACCUM operator correctly
Fix for RESTPP timeout error
TigerGraph 2.6.0
Changes
Release Date 2020-04-24
New and modified features and described in the TigerGraph 2.6 Release Notes.​
Enhancements
Remove SSH connection use dependency for GSQL Install Query command
New 'force' parameter to RebuildNow so that engine to start the rebuild.
Fixed
Core: GSE crash in HA setup when CPU usage is extremely high
Core: Out Of Memory handling improvements to prevent GPE crash due bad memory allocation call
GLE: fix builtin query crash in worker due to graph id missing
Core: Skewed CPU usage for high-query throughput scenarios
Fixes in Rebuild to address broken edge count
Fix for 2.5.2 bug - Inconsistent query results when running non-distributed query on a cluster
Unable to find local vertex and edge with same name in multiple graphs
RESTPP memory leak due to yaml file
Reverse edge id is wrong when two local edges with reverse edge are created with same name
TigerGraph 2.5.4
Release Date: 2020-04-24
Enhancements
New 'force' parameter to RebuildNow so that engine to start the rebuild.
Improved version of /abortquery so that query can be aborted more quickly
Fixed
Fixes in Rebuild to address broken edge count
RESTPP memory leak due to yaml file
Builtin query crashed due to missing Graph Id 
RESTPP crash for same vertex name in the global graph
Resolved the distributed query hanging issue which could block rebuild and schema change 
Core: Skewed CPU usage for high-query throughput scenarios
TigerGraph 2.5.3
Release Date: 2020-02-26
Fixed
Ensure catalog data backed up before schema change
Support creation of two local edges with same name with one being a reverse edge
Support Local vertex and edge type with same name in multiple graphs in 
Support for multi-lingual string constant in Interpret query mode
Upgrade to Release 2.5.2 leads to inconsistent query results
Compute resource usage spikes on particular node in cluster
GCleanUp failed to cleanup all pointers when adjusting thread
TigerGraph 2.5.2
Release Date: 2020-01-27
TigerGraph 2.5.2 is not compatible with versions prior to 2.5.1. Customers who are using Pre-2.5.1 version and intending to migrate to 2.5.2 are advised to take backup of their existing version before upgrading to 2.5.2. This will enable them to downgrade back to the original Pre-2.5.1 version if needed.
New Features
GPE: Increase MemoryCheck frequency  based on Resource Usage
GPE: Abort Query if Memory usage crosses critical threshold
GSE: Support Log compaction as part of startup for GSE
GraphStudio: Support Multi-edge pair in design schema.
Core: Support OS RHEL 8.0 in Installer
Enhancements
REST: Increase the RESTPP reload timeout
GSQL: Change error message to specify user when default tigergraph user is dropped
GSQL: Make user tigergraph droppable
GraphStudio: Do not change layout when adding/updating/deleting vertex and edge
Fixed
Core: GPE crashed running distributed LDBC query
GST: Incorrect vertex count in TigerGraph GraphStudio
Core: Shuffle deadlock causing full system memory use
Core: Replace GASSERT with GWARN in GDataBox
Core: BATCH_SIZE of Kafka loader set from GSQL console doesn't work
GPE: Schema Change failed due to Query Install OOM
GSQL: Quote in string key is not escaped
GraphStudio: Reverse edge filter doesn't work
Core: Don't display LDAP password in IUM
TigerGraph 2.5.1
Release Date:  2019-11-25
Fixed
Core: Distributed delete affects data consistency after GPE restart
Core: Shuffle hangs when sendingQueue is full
Core: Longevity test failing due to change in memory allocator (TCMalloc)
GPE: Crash after upgrade from 2.4.1 to 2.5
GPE: Serialization error when reading from input stream
GPE: Query state can result in race condition inside ReadOneDelta;
GPE: GPE crashes when a query calls a sub-query with a write operation
GSE: Script to resolve delete inconsistency between GSE and GPE
GSE: Multiple Kafka loading jobs fail
GSQL: Built-in function names in GSQL are case sensitive
GSQL: Interpret query doesn't work when authentication is on
GSQL: Deadlock when graph store is being cleared and authentication is on
GSQL: Token authentication returning null during Global schema change
GSQL: SSO login failure due to missing org.apache.santuario:xmlsec library
GraphStudio: Vertex to edge expansion settings are not retained
GBAR Backup: Backup failure if loading jobs are in progress 
TigerGraph 2.5.0
Release Date 2019-09-18
Changes
New and modified features and described in the TigerGraph 2.5 Release Notes.
Fixed
Improvements to fix possible crash, deadlock, overflow, and memory leak situations
Improve query performance stability
Fix some query string passing and parsing issues
Correct some inconsistencies between the documented specification and actual behavior
Improve robustness of Kakfa and S3 Loaders
Clean up files and graph properly after certain failed operations
Fix some installation issues
TigerGraph 2.4.1
Release Date 2019-07-23
Changes
To select pattern matching support in a query, the syntax is now
CREATE QUERY ... SYNTAX v2
instead of 
CREATE QUERY ... SYNTAX("v2")
Fixed
GPE: Fix uint32 overflow
Loader: Allow temp_table to be used without flatten function
IDS: Disable empty UID
ZMQ: Fix crash on ill-formed message
Util: Fix Unix domain socket file not generated correctly in cron job
Util: Extend data size for GoutputStreamBuffer beyond 4GB
Connector: Fix first line is not ignored with has_header enabled
Connector: Fix failures on retrieving connector status
GSQL: Fix syntax version setting inconsistency issues
GSQL: Fix schema change with USING primary_id_as_attribute
GSQL: Fix JSON output format of requesttoken API
Admin Portal: Display correct counts of physical vertices and edges on each machine
TigerGraph 2.4.0
Release Date 2019-06-25
New Features
See Release Notes - TigerGraph 2.4​
Fixed
GSQL: The built-in count() function gives the correct value in all cases.
GPE: startup hang
GSQL server start/stop command not working
LDAP config truncated by space
GSE: boolean values are not displayed correctly
Security issue CVE-2013-7459 caused by unused python crypto library
IUM status is displayed incorrectly in some cases;
TigerGraph 2.3.2
Release Date 2019-04-01
Issues
GSQL: The built-in count() function may give the incorrect value for clustered systems after some vertices have been deleted.
Fixed
GraphStudio: Send query pre-install dependency analysis result through WebSocket
GraphStudio: filter out improper attributes in when building filter expressions
GPE: fix wrong enumerator id issue
GPE: avoid using /tmp
GPE: handle exceptions for LIKE <expr>
GPE: Fix crash due to writing wrong size of STRING_LIST
GPE: Fix global schema change error which added local vertex twice
GSE (Developer Edition): Keep one copy of segment
TigerGraph 2.3.1
Release Date 2019-02-19
New Features
See Release Notes-TigerGraph 2.3​
Issues
GSQL: The built-in count() function may give the incorrect value for clustered systems after some vertices have been deleted.
Fixed
Install: The IP list fetched by the installer could be incomplete.
Loading: Speed up batch-delta loading.
GraphStudio: Disable Install Query button for queryreader users.
GraphStudio: Re-initialize the database after import.
GraphStudio: Could not drop query with non-default username/password.
AdminPortal: Queries-Per-Second display didn't work if RESTPP authorization was enabled.
Schema change: Improve schema change stability by reducing schema change history and increasing gRPC max message limit.
GPE: Improve  query HA stability.
GPE: Fix crash under certain conditions.
Core: Memory leak due to yamlcpp.
Core: compatibility issue between libc and ssh utility.
IUM: Fix exceptions due to legacy config entries.
TigerGraph 2.2.4
Release Date: 2018-12-13
Fixed
Distributed System: Fix possible deadlock and race conditions
GSE Storage Engine: Fix disk seek overflow
RESTPP: Optimize the memory consumption when system is idle
RESTPP: Optimize config reload time
GSQL: Fix query installation error with option -optimize
GSQL: Fix a code generation bug related to static variable
GSQL: Fix a compilation error when a statement is in nested if statement
GraphStudio: Security update for npm-run-all 
GraphStudio: Change Help button to point to new docs.tigergraph.com site
Gadmin: Fix gadmin/ts3 restart and status error after changing port of TS3
TigerGraph 2.2.3
Release Date: 2018-11-30
Fixed
GraphStudio: Fix schema change bug (Note: In 2.2, GraphStudio now does not drop all data when making a schema change.)
GraphStudio: Fix display issue in Graph Explore when switch to a new graph
GraphStudio: Improve password security
GraphStudio: Modify URL to AdminPortal for better universal support
IUM: Fix kafka-loader configuration after cluster expansion
IUM: Resolve python module name conflict
IUM: Fix ssh_port is always 1 under bash interactive mode
GSE Storage Engine: Reduce memory consumption
RESTPP: Improve logging messages
TigerGraph 2.2
Release Date: 2018-11-05
New Features
See Release Notes-TigerGraph 2.2​
Fixed
GraphStudio: When both a query draft and an installed query  exist, Export Solution will keep the installed query code instead of the query draft
Admin Portal: Number of nodes in the cluster is reported as 0 when no graph yet exists
TigerGraph 2.1.8
Release Date: 2018-11-05
Issues
GBAR Backup fails if HA is enabled
GSE status shows unknown with HA enabled
TS3 fails to collect QPS when RESTPP Authentication is enabled (Admin Portal QPS monitor will be unavailable in this case).
GraphStudio: When both a query draft and an installed query  exist, Export Solution will keep the installed query code instead of the query draft.
Admin Portal: Number of cluster nodes is reported as 0 when no graph exists.
Fixed
GSQL server error if schema is too large
In a cluster, not all servers may be aware of deleted vertices.
PAM limit set-up issue in installer
In MultiGraph, a local (FROM *, TO *) local edge has global side effects.
RESTPP's default API version is not set after installation
An engine bug which occasionally causes crash
Added
SSH port configuration in installer.
Installation script checks that the machine meets the minimum RAM (8GB) and CPU (2-core) requirements.
For Ubuntu 16.04/18.04, support logon with systemd service.
TigerGraph 2.1.7
Release Date: 2018-08-20
Issues
GBAR backup fails if HA is enabled.
TS3 fails to collect QPS when RESTPP Authentication is enabled (Admin Portal QPS monitor will be unavailable in this case).
GraphStudio: When both a query draft and an installed query  exist, Export Solution will keep the installed query code instead of the query draft.
Admin Portal: Number of cluster nodes is reported as 0 when no graph exists.
Fixed
Cluster configuration with HA enabled is wrong if the number of nodes is odd (3, 5, 7, 9...).
GraphStudio and GSQL inconsistent checking for some keywords
GBAR backup and restore fail if special character is in tag name
TigerGraph 2.1.6
Release Date: 2018-08-15
Issues
Cluster configuration with HA enabled is wrong if the number of nodes is odd (3, 5, 7, 9...).
GraphStudio: When both a query draft and an installed query  exist, Export Solution will keep the installed query code instead of the query draft.
TS3 fails to collect QPS when RESTPP Authentication is enabled (Admin Portal QPS monitor will be unavailable in this case).
Admin Portal: Number of cluster nodes is reported as 0 when no graph exists.
Fixed
GSQL null pointer exception during schema change if a directed edge is dropped but its partner reverse edge is kept.
Some complex attribute types cannot be correctly posted via /graph endpoint.
In some cases, tuple on reverse edge crashes GPE.
GraphStudio throws an authentication error if RESTPP authentication is enabled.
Added
License level control of MultiGraph functionality.
Tigergraph 2.1.5
Release Date: 2018-07-24
Known Issues
GSQL null pointer exception during schema change if a directed edge is dropped but its partner reverse edge is kept.
Some complex attribute types cannot be correctly posted via /graph endpoint.
In some cases, tuple on reverse edge crashes GPE.
Fixed
GraphStudio Export package is occasionally incomplete.
GSE status is always "not ready" if schema is too large.
Cannot modify RESTPP port configuration.
IUM error in a cluster when not running on node m1
v3.0 Removal of Previously Deprecated Features
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