Nebula Graph v3.0.0 is officially released, adding BR tools, supporting multiple Pattern MATCH and other features

The new version of Nebula Graph v3.0.0 is released, which supports BR, openCypher multi-MATCH query, KV separation, topN pushdown and Chinese Schema and other features.

Feature

• Added backup and recovery tool BR . #3469 #1 #22

• Support openCypher multi-match query . #3519 #3318

• Added the combined version of saving and computing . #3310

• Added kv separation of storage engine . #3281

• Added LOOKUPsupport for topN pushdown. #3499

• Add points without tags . #3316 #3335 #3328 #3286

• Added parameterized query . #3379

• Add a query without specifying a VIDLIMIT , and limit the output results through clauses. #3320 #3329 #3262

• Added duration data type and function. #3338

• Support Schema uses most UTF-8 encoded characters of 1~4 bytes . #3380 #3440

• Added View Specified User permission . #3300

Enhancement

• Refactor cluster management. #3343

• When the log disk space is insufficient, it supports changing the log level. #3576

• Any string in backticks is supported as a Tag name. #3424

• The Storage service sends the partition's disk path information to the Meta service through heartbeat. #3369 #3416

• Add a limit on invalid password attempts. #3573 #3629

• TOSS supports DELETEoperational consistency. #3374

• Support docking logrotate. #3541

• Support more statistics. #3446 #3605 #3590

• Enhanced date parser. #3179

• Remove read locks in the meta service to reduce the side effects of read-write locks. #3256

• Refactor the storage index to solve the problem of serious coupling between nodes. #3196

• round()Supports floating-point precision for the specified function. #3178 ß

• ES client supports https. #3150

• Move version information out of heartbeat. #3378

• Empty lists, sets, maps are supported. #3302

• Supports specifying the s2 area coverage parameter when creating a geographic index. #3396

• SHOW HOSTSAdded the display of version information in . #3702

Bug fix

• Fixed the problem that the memory was not released when the default value was used when no value was specified in nGQL. #3666

• Fixed coalesce()an issue where functions could not be used. #3653

• Fix the problem that the search result is wrong because the Tag has created an index when inserting in batches. #3627

• Fix crash when expression exceeds depth. #3606

• YIELDDisable clauses and WHEREaggregate functions in clauses of nGQL . #3597

• Fix crash when using aggregate function in UNWIND, WHEREclause. #3397 #3355

• Fix rebuild label index with old Schema version value. #3332

• Fixed GO...REVERSELYan issue where using query results would contain expired edges. #3536

• Fix bug in estimating memory info in CentOS6. #3534

• Fix LOOKUPcrash when statement contains a filter consisting of a logical AND expression and an IN expression with only one element. #3525

• Fix metad hanging under high load. #3482

• Fix UNWINDcrash of subgraphs. #3506

• Fix DROP SPACEcrash when rebuilding indexes. #3406

• Fix the problem of reading memory statistics under cgroup v2. #3419

• Fix DROP TAG INDEXthe problem that the edge index with the same name will be deleted, and the TAG index with the same name will also be deleted when the edge index is deleted. #3413

• Fixed an issue where edges could not be displayed after cloning a space. #3351

• Fix index existence check. #3315

• Fixed ALTERan issue that could cause the store to get a null pointer when getting a type property after executing a statement. #3325

• Optimize raft to make the system more stable. #3172 #3435 #3358 #3322 #3031

• The memory check is canceled when the memory ratio is greater than 1.0. #3289

• Fix errors when compiling with Ninja. #3195

• Fixed an issue where creating a Tag and Edge type with the same name at the same time might succeed. #3735

• Fixed the issue that creating a full-text index fails when the same internal ID of Tag or Edge type exists in different graph spaces. #3747

• Fixed inconsistent variables in YIELDclause and GOstatement . #3430

• Fix crash when schema version is greater than 256. #3893

Incompatibility

Nebula Graph v3 does not support most of the ecological tools of v2.x, please upgrade the ecological tools .

• The Storage host added in the configuration file cannot be directly read and written. The function of the configuration file is only to register the Storage host with the Meta service. The command must be used ADD HOSTSto read and write to the Storage host normally. #3343

• Disable ZONE and GROUP. #3776 #3825 #3330

• Disabled BALANCE DATA. #3756

• 0Modified the default session timeout from 28800seconds 1to 604800seconds. #3357 #3807

• Added SHOW LOCAL SESSIONSand SHOW LOCAL QUERIEScommands, and deprecated SHOW ALL QUERIES. #3488

• At least one tag is modified from the point to no tag. DELETE VERTEXIt is modified to delete only the point by default, and no longer delete the out and in edges associated with the point. In this case, there will be dangling edges by default. #3316 #3335 #3328 #3286

• The disable YIELDclause returns custom variables. #3271

• FETCHA clause must be added to the , GO, LOOKUP, FIND PATH, statement . #2957 #3056 #3139GET SUBGRAPHYIELD

• Added non-reserved keywords s2_max_level, s2_max_cells. #3396

• When getting a point attribute in a MATCH statement, you must specify a Tag, such as from return v.nameto return v.player.name. #3255

historic version

historic version

You can go to GitHub to experience this version: https://github.com/vesoft-inc/nebula/releases/tag/v3.0.0

Exchange graph database technology? To join the Nebula exchange group, please fill in your Nebula business card first , and the Nebula assistant will pull you into the group~~

{{o.name}}

{{m.name}}