github.com/dgraph-io/dgraph

Note: This release requires you to export and re-import data. We have changed the underlying storage format.

Added

• The Alter endpoint can be protected by an auth token that is set on the Dgraph Alphas via the --auth_token option. This can help prevent accidental schema updates and drop all operations. (#2692)
• Optimize has function (#2724)
• Expose the health check API via gRPC. (#2721)

Changed

• Dgraph is relicensed to Apache 2.0. (#2652)
• Breaking change. Rename Dgraph Server to Dgraph Alpha to clarify discussions of the Dgraph cluster. The top-level command dgraph server is now dgraph alpha. (#2667)
• Prometheus metrics have been renamed for consistency for alpha, memory, and lru cache metrics. (#2636, #2670, #2714)
• The dgraph-converter command is available as the subcommand dgraph conv. (#2635)
• Updating protobuf version. (#2639)
• Allow checkpwd to be aliased (#2641)
• Better control excessive traffic to Dgraph (#2678)
• Export format now exports on the Alpha receiving the export request. The naming scheme of the export files has been simplified.
• Improvements to the dgraph debug tool that can be used to inspect the contents of the posting lists directory.
• Bring in Badger updates (#2697)

Fixed

• Make raft leader resume probing after snapshot crash (#2707)
• Breaking change: Create a lot simpler sorted uint64 codec (#2716)
• Increase the size of applyCh, to give Raft some breathing space. Otherwise, it fails to maintain quorum health.
• Zero should stream last commit update
• Send commit timestamps in order (#2687)
• Query blocks with the same name are no longer allowed.
• Fix out-of-range values in query parser. (#2690)

Added

• This version switches Badger Options to reasonable settings for p and w directories. This removes the need to expose --badger.options option and removes the none option from --badger.vlog. (#2605)
• Add support for ignoring parse errors in bulk loader with the option --ignore_error. (#2599)
• Introduction of new command dgraph cert to simplify initial TLS setup. See TLS configuration docs for more info.
• Add expand(_forward_) and expand(_reverse_) to GraphQL+- query language. If _forward_ is passed as an argument to expand(), all predicates at that level (minus any reverse predicates) are retrieved. If _reverse_ is passed as an argument to expand(), only the reverse predicates are retrieved.

Changed

• Rename intern pkg to pb (#2608)

Fixed

• Remove LinRead map logic from Dgraph (#2570)
• Sanity length check for facets mostly.
• Make has function correct w.r.t. transactions (#2585)
• Increase the snapshot calculation interval, while decreasing the min number of entries required; so we take snapshots even when there's little activity.
• Convert an assert during DropAll to inf retry. (#2578)
• Fix a bug which caused all transactions to abort if --expand_edge was set to false. Fixes #2547.
• Set the Applied index in Raft directly, so it does not pick up an index older than the snapshot. Ensure that it is in sync with the Applied watermark. Fixes #2581.
• Pull in Badger updates. This also fixes the Unable to find log file, retry error.
• Improve efficiency of readonly transactions by reusing the same read ts (#2604)
• Fix a bug in Raft.Run loop. (#2606)
• Fix a few issues regarding snapshot.Index for raft.Cfg.Applied. Do not overwrite any existing data when apply txn commits. Do not let CreateSnapshot fail.
• Consider all future versions of the key as well, when deciding whether to write a key or not during txn commits. Otherwise, we'll end up in an endless loop of trying to write a stale key but failing to do so.
• When testing inequality value vars with non-matching values, the response was sent as an error although it should return empty result if the query has correct syntax. (#2611)
• Switch traces to glogs in worker/export.go (#2614)
• Improve error handling for dgraph live for errors when processing RDF and schema files. (#2596)
• Fix task conversion from bool to int that used uint32 (#2621)
• Fix expand(_all_) in recurse queries (#2600).
• Add language aliases for broader support for full text indices. (#2602)

Added

• Introduce a new /assignIds HTTP endpoint in Zero, so users can allocate UIDs to nodes externally.
• Add a new tool which retrieves and increments a counter by 1 transactionally. This can be used to test the sanity of Dgraph cluster.

Changed

• This version introduces tracking of a few anonymous metrics to measure Dgraph adoption (#2554). These metrics do not contain any specifically identifying information about the user, so most users can leave it on. This can be turned off by setting --telemetry=false flag if needed in Dgraph Zero.

Fixed

• Correctly handle a list of type geo in json (#2482, #2485).
• Fix the graceful shutdown of Dgraph server, so a single Ctrl+C would now suffice to stop it.
• Fix various deadlocks in Dgraph and set ConfState in Raft correctly (#2548).
• Significantly decrease the number of transaction aborts by using SPO as key for entity to entity connections. (#2556).
• Do not print error while sending Raft message by default. No action needs to be taken by the user, so it is set to V(3) level.