ArangoDB v3.13 is under development and not released yet. This documentation is not final and potentially incomplete.

Known Issues in ArangoDB 3.7

Important issues affecting the 3.7.x versions of the ArangoDB suite of products

Note that this page does not list all open issues.

ArangoSearch

Issue
Date Added: 2018-12-19 Component: ArangoSearch Deployment Mode: Single-server Description: Value of `_id` attribute indexed by ArangoSearch view may become inconsistent after renaming a collection Affected Versions: 3.5.x, 3.6.x, 3.7.x Fixed in Versions: - Reference: arangodb/backlog#514 (internal)
Date Added: 2018-12-03 Component: ArangoSearch Deployment Mode: Cluster Description: Score values evaluated by corresponding score functions (BM25/TFIDF) may differ in single-server and cluster with a collection having more than 1 shard Affected Versions: 3.4.x, 3.5.x, 3.6.x, 3.7.x Fixed in Versions: - Reference: arangodb/backlog#508 (internal)
Date Added: 2018-12-03 Component: ArangoSearch Deployment Mode: All Description: Using a loop variable in expressions within a corresponding SEARCH condition is not supported Affected Versions: 3.4.x, 3.5.x, 3.6.x, 3.7.x Fixed in Versions: - Reference: arangodb/backlog#318 (internal)
Date Added: 2019-06-25 Component: ArangoSearch Deployment Mode: All Description: The `primarySort` attribute in ArangoSearch View definitions cannot be set via the web interface. The option is immutable, but the web interface does not allow to set any View properties upfront (it creates a View with default parameters before the user has a chance to configure it). Affected Versions: 3.5.x, 3.6.x, 3.7.x Fixed in Versions: - Reference: N/A
Date Added: 2020-03-19 Component: ArangoSearch Deployment Mode: All Description: Operators and functions in `SEARCH` clauses of AQL queries which compare values such as `>`, `>=`, `<`, `<=`, `IN_RANGE()` and `STARTS_WITH()` neither take the server language (`--default-language`) nor the Analyzer locale into account. The alphabetical order of characters as defined by a language is thus not honored and can lead to unexpected results in range queries. Affected Versions: 3.5.x, 3.6.x, 3.7.x Fixed in Versions: - Reference: arangodb/backlog#679 (internal)
Date Added: 2020-05-22 Component: ArangoSearch Deployment Mode: Cluster Description: The immediate recreation of ArangoSearch Analyzers in cluster deployments (deleting and shortly after creating one with the same name but different properties) causes errors in queries which involve such recreated Analyzers. Affected Versions: 3.5.x, 3.6.x, 3.7.0, 3.7.0-1 Fixed in Versions: 3.7.1-alpha.1 Reference: arangodb/backlog#669 (internal), arangodb/backlog#695 (internal)
Date Added: 2020-06-16 Component: ArangoSearch Deployment Mode: All Description: The creation of Views in databases other than `_system` fails if the current user has no access to the default database. This is caused by the system which attempts to read from the global `_analyzers` collection without checking permissions first. Affected Versions: 3.7.0 Fixed in Versions: 3.7.1 Reference: arangodb/backlog#669 (internal), arangodb/arangodb#11849
Date Added: 2020-07-31 Component: ArangoSearch Deployment Mode: All Description: AQL queries with subqueries or joins in SEARCH expressions may return incorrect results. As a workaround, you can disable the optimizer rule which causes the problem with the following query options: `{ optimizer: { rules: [ "-inline-subqueries" ] } }` Affected Versions: 3.5.x, 3.6.x, 3.7.x Fixed in Versions: - Reference: arangodb/arangodb#12247
Date Added: 2020-07-31 Component: ArangoSearch Deployment Mode: All Description: The `STARTS_WITH()` and `PHRASE()` ArangoSearch functions don’t accept an array of prefixes / phrase parts as intended. Affected Versions: 3.7.x Fixed in Versions: - Reference: arangodb/backlog#741 (internal), arangodb/backlog#738 (internal)
Date Added: 2020-07-31 Component: ArangoSearch Deployment Mode: All Description: The `LEVENSHTEIN_MATCH()` ArangoSearch function incorrectly calculates the Damerau-Levenshtein distance if the distance is greater than 4 and pure Levenshtein distance is requested. Affected Versions: 3.7.x Fixed in Versions: 3.7.2 Reference: arangodb/backlog#731 (internal)
Date Added: 2020-07-31 Component: ArangoSearch Deployment Mode: All Description: Wildcard searches like `"%a%b_c%"` may not match all indexed terms (e.g. `"aQWEQbbQcDDDFS"`). Affected Versions: 3.7.x Fixed in Versions: 3.7.2 Reference: arangodb/backlog#732 (internal)

AQL

Issue
Date Added: 2018-09-05 Component: AQL Deployment Mode: Cluster Description: In a very uncommon edge case there is an issue with an optimization rule in the cluster. If you are running a cluster and use a custom shard key on a collection (default is `_key`) and you provide a wrong shard key in a modifying query (`UPDATE`, `REPLACE`, `DELETE`) and the wrong shard key is on a different shard than the correct one, a `DOCUMENT NOT FOUND` error is returned instead of a modification (example query: `UPDATE { _key: "123", shardKey: "wrongKey"} WITH { foo: "bar" } IN mycollection`). Note that the modification always happens if the rule is switched off, so the suggested workaround is to deactivate the optimizing rule `restrict-to-single-shard`. Affected Versions: 3.4.x, 3.5.x, 3.6.x, 3.7.x Fixed in Versions: - Reference: arangodb/arangodb#6399
Date Added: 2020-07-22 Component: AQL Deployment Mode: Cluster Description: When explicitly destroying an AQL Cursor created with `stream: true` in a cluster deployment, the server does not reply (the request hangs forever). Affected Versions: 3.6.x, 3.7.0 Fixed in Versions: 3.7.1 Reference: BTS-126 (internal)
Date Added: 2021-03-24 Component: AQL Deployment Mode: All Description: Queries can crash the server if the `splice-subqueries` optimization is applied and a sub-query has no results. Disabling said optimization via the query option `{ "optimizer": { "rules": [ "-splice-subqueries" ] } }` avoids the problem. Affected Versions: 3.7.6 - 3.7.10 Fixed in Versions: 3.7.11 Reference: arangodb/arangodb#13702
Date Added: 2021-04-19 Component: AQL Deployment Mode: All Description: User-defined variable names in AQL cannot start with an underscore, in contrast to what the AQL documentation claimed. Affected Versions: 3.5.x, 3.6.x, 3.7.x, 3.8.x Fixed in Versions: 3.9.0 Reference: arangodb/arangodb#13513
Date Added: 2021-05-25 Component: AQL Deployment Mode: All Description: Global and per-query memory limits are not enforced for AQL graph traversals. Such queries may thus cause out-of-memory issues as they will not be killed despite exceeding the configured `--query.memory-limit` or Cursor API `memoryLimit`. Affected Versions: 3.5.x, 3.6.x, 3.7.x, 3.8.x, 3.9.x Fixed in Versions: - Reference: BTS-411 (internal)

Upgrading

Issue
Date Added: 2019-05-16 Component: arangod Deployment Mode: All Description: Bugfix release upgrades such as 3.4.4 to 3.4.5 may not create a backup of the database directory even if they should. Please create a copy manually before upgrading. Affected Versions: 3.4.x, 3.5.x, 3.6.x, 3.7.x (Windows and Linux) Fixed in Versions: - Reference: arangodb/planning#3745 (internal)
Date Added: 2019-12-10 Component: Installer Deployment Mode: All Description: The NSIS installer for Windows may fail to upgrade an existing installation, e.g. from 3.4.a to 3.4.b (patch release), with the error message: “failed to detect whether we need to Upgrade” Affected Versions: 3.4.x, 3.5.x, 3.6.x, 3.7.x Fixed in Versions: - Reference: arangodb/release-qa#183 (internal)
Date Added: 2020-01-07 Component: Installer Deployment Mode: All Description: The NSIS installer for Windows can fail to add the path to the ArangoDB binaries to the `PATH` environment variable, silently or with an error. Affected Versions: 3.4.x, 3.5.x, 3.6.x, 3.7.x Fixed in Versions: - Reference: arangodb/release-qa#183 (internal)

Hot Backup

Issue
Date Added: 2019-10-09 Component: Hot Backup API / arangobackup Deployment Mode: All Description: The Hot Backup feature is not supported in the Windows version of ArangoDB at this point in time. Affected Versions: 3.5.x, 3.6.x, 3.7.x Fixed in Versions: - Reference: N/A
Date Added: 2019-10-09 Component: arangobackup Deployment Mode: All Description: The startup option `--operation` works as positional argument only, e.g. `arangobackup list`. The alternative syntax `arangobackup --operation list` is not accepted. Affected Versions: 3.5.x, 3.6.x, 3.7.x Fixed in Versions: - Reference: N/A
Date Added: 2021-08-06 Component: Coordinator Deployment Mode: Cluster Description: Restoring a hot backup to another deployment that has databases with the same names as in the backup can cause these databases to become inaccessible on Coordinators. They can be listed with `db._databases()` in arangosh, but not accessed using `db._useDatabase()`. Affected Versions: 3.6.x, 3.7.x, 3.8.x Fixed in Versions: 3.7.14, 3.8.1 Reference: BTS-527 (internal)

Schema Validation

Issue
Date Added: 2019-03-17 Component: Schema Validation Deployment Mode: All Description: The schema validation cannot pin-point which part of a rule made it fail. This is under investigation but very hard to solve for complex schemas. For example, when using `not` and `anyOf`, this would result in trees of possible errors. For now users should fall back to tools like jsonschemavalidator.net Affected Versions: 3.7.x Fixed in Versions: - Reference: N/A
Date Added: 2019-03-17 Component: Schema Validation Deployment Mode: All Description: Remote schemas are not supported for security reasons. This limitation will likely remain unfixed. Affected Versions: 3.7.x Fixed in Versions: - Reference: N/A
Date Added: 2019-06-25 Component: Schema Validation Deployment Mode: All Description: When using arangorestore for a collection with a defined schema, schema validation is not executed. Affected Versions: 3.7.x Fixed in Versions: - Reference: N/A

Other

Issue
Date Added: 2019-05-16 Component: Starter Deployment Mode: All Description: The ArangoDB Starter falls back to the IP `[::1]` under macOS. If there is no entry `::1 localhost` in the `/etc/hosts` file or the option `--starter.disable-ipv6` is passed to the starter to use IPv4, then it will hang during startup. Affected Versions: 0.14.3 (macOS only) Fixed in Versions: - Reference: N/A
Date Added: 2019-05-24 Component: Web UI Deployment Mode: Active Failover Description: The web interface shows a wrong replication mode in the replication tab in Active Failover deployments sometimes. It may display Master/Slave mode (the default value) because of timeouts if `/_api/cluster/endpoints` is requested too frequently. Affected Versions: 3.5.x, 3.6.x, 3.7.x Fixed in Versions: - Reference: N/A
Date Added: 2019-04-03 Component: arangod Deployment Mode: Cluster Description: Updating the properties of a collection in the cluster may return before the properties are updated consistently on all shards. This is especially visible when setting a schema for a collection with multiple shards, and then instantly starting to store non-conforming documents into the collection. These may be accepted until the properties change has been fully propagated to all shards. Affected Versions: 3.7.x Fixed in Versions: - Reference: N/A
Date Added: 2020-04-23 Component: arangod Deployment Mode: Cluster Description: The creation of example graphs fails if `--cluster.min-replication-factor` is set to a value greater than 1, because the system attempts to create the collections with a replication factor of 1 despite the higher minimum. Affected Versions: 3.6.x, 3.7.0, 3.7.0-1 Fixed in Versions: 3.6.4, 3.7.1-alpha.1 Reference: arangodb/arangodb#11487
Date Added: 2020-06-19 Component: SmartGraphs Deployment Mode: Cluster Description: When inserting edges into an edge collection of a SmartGraph, the auto-generated `_rev` values for the ingoing and outgoing part of the edge may differ. This can be confusing when querying the `_rev` values of the edges later. Affected Versions: 3.4.x, 3.5.x, 3.6.x, 3.7.x Fixed in Versions: 3.6.5, 3.7.1 Reference: N/A
Date Added: 2020-06-30 Component: SmartGraphs Deployment Mode: Cluster Description: Changing the collection properties of a smart edge collection did not propagate the changes to child collections for the `waitForSync`, `cacheEnabled` and `schema` attributes. This has been fixed in 3.7.1 for new smart edge collections, created with 3.7.1 or later. Affected Versions: 3.4.x, 3.5.x, 3.6.x, 3.7.x Fixed in Versions: 3.7.1 Reference: arangodb/arangodb#12065
Date Added: 2020-07-31 Component: Web UI Deployment Mode: All Description: The API tab of Foxx services does not render the Swagger UI interface. Affected Versions: 3.6.x, 3.7.x Fixed in Versions: 3.6.6, 3.7.1 Reference: arangodb/arangodb#12297
Date Added: 2020-07-31 Component: Web UI Deployment Mode: All Description: The web interface confirms the creation of an index, but then displays an error `404: Not Found` despite of a successful index creation. Affected Versions: 3.6.x, 3.7.x Fixed in Versions: 3.6.6, 3.7.1 Reference: arangodb/arangodb#12248
Date Added: 2020-07-31 Component: ArangoDB Starter Deployment Mode: All Description: The included ArangoDB Starter version does not support JWT secret rotation. In addition, there is no way to set the arangod option `server.jwt-secret-keyfile` (via option pass-through capability of the Starter) because the Starter either ignores it (if no `--auth.jwt-secret` was used) or blocks it with an error (Pass through option --server.jwt-secret-keyfile conflicts with automatically generated option with value). Affected Versions: 3.7.x Fixed in Versions: - Reference: BTS-124 (internal)
Date Added: 2020-11-20 Component: arangod Deployment Mode: All Description: The value of the startup option `--network.io-threads` is clamped to `1`. Affected Versions: 3.6.x, 3.7.x Fixed in Versions: 3.6.10, 3.7.5 Reference: arangodb/arangodb#13051
Date Added: 2020-11-20 Component: arangod Deployment Mode: All Description: The `Www-Authenticate` header is not set for HTTP 401 responses as required by the HTTP specification, despite the documentation claiming this behavior. Affected Versions: 3.5.x, 3.6.x, 3.7.x Fixed in Versions: 3.8.0 Reference: arangodb/arangodb#13001
Date Added: 2020-12-10 Component: arangod Deployment Mode: Cluster Description: A database not found error may occur in a setup with multiple Coordinators when the list of slow queries is accessed or cleared directly after a new database has been created. Affected Versions: 3.6.10, 3.7.5 Fixed in Versions: 3.6.11, 3.7.6 Reference: arangodb/arangodb#13190
Date Added: 2021-04-07 Component: arangod Deployment Mode: All Description: The Batch API (HTTP endpoint `/_api/batch`) cannot be used in combination with Stream transactions to submit batched requests, because the required header `x-arango-trx-id` is not forwarded. It only processes `Content-Type` and `Content-Id`. Affected Versions: 3.5.x, 3.6.x, 3.7.x, 3.8.x Fixed in Versions: - Reference: arangodb/arangodb#13552
Date Added: 2021-07-20 Component: Replication Deployment Mode: Cluster Description: The synchronous replication protocol used in cluster deployments has a flaw that can cause follower shards to lag behind the leader shards for extended periods of time, without detecting that the synchronization is delayed. While uncommon to occur, it can lead to inconsistencies between replicas that may cause follow-up issues. It is important to upgrade 3.6.x deployments to at least 3.6.15 and 3.7.x deployments to 3.7.13 and to set and keep the supervision in maintenance mode during the whole upgrade process in case of manual cluster deployments. For ArangoDB Starter cluster deployments, make sure to use at least version 0.15.0-1 of the starter. In case of Kubernetes-operated clusters, make sure to use at least version 1.2.0 of `kube-arangodb`. Affected Versions: 3.6.x, 3.7.x Fixed in Versions: 3.6.15, 3.7.13 Reference: Technical Alert #6
Date Added: 2022-01-31 Component: ArangoSync, SmartGraphs Deployment Mode: DC2DC Description: In a DC2DC replication scenario, when you try to replicate a Disjoint Smartgraph, the sync of collections may get stuck. Affected Versions: 3.7.x Fixed in Versions: - Reference: BTS-737 (internal)

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