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Changes by Version

Release Notes.

0.7.0

File System Changes

  • Bump up the version of the file system to 1.1.0 which is not compatible with the previous version.
  • Move the series index into segment.
  • Swap the segment and the shard.
  • Move indexed values in a measure from data files to index files.
  • Merge elementIDs.bin and timestamps.bin into a single file.

Features

  • Check unregistered nodes in background.
  • Improve sorting performance of stream.
  • Add the measure query trace.
  • Assign a separate lookup table to each group in the maglev selector.
  • Convert the async local pipeline to a sync pipeline.
  • Add the stream query trace.
  • Add the topN query trace.
  • Introduce the round-robin selector to Liaison Node.
  • Optimize query performance of series index.

Bugs

  • Fix the filtering of stream in descending order by timestamp.
  • Fix querying old data points when the data is in a newer part. A version column is introduced to each data point and stored in the timestamp file.
  • Fix the bug that duplicated data points from different data nodes are returned.
  • Fix the bug that the data node can't re-register to etcd when the connection is lost.
  • Fix memory leak in sorting the stream by the inverted index.
  • Fix the wrong array flags parsing in command line. The array flags should be parsed by "StringSlice" instead of "StringArray".
  • Fix a bug that the Stream module didn't support duplicated in index-based filtering and sorting
  • Fix the bug that segment's reference count is increased twice when the controller try to create an existing segment.
  • Fix a bug where a distributed query would return an empty result if the "limit" was set much lower than the "offset".

Documentation

  • Introduce new doc menu structure.
  • Add installation on Docker and Kubernetes.
  • Add quick-start guide.

0.6.1

Features

  • Limit the max pre-calculation result flush interval to 1 minute.
  • Use both datapoint timestamp and server time to trigger the flush of topN pre-calculation result.
  • Add benchmarks for stream filtering and sorting.
  • Improve filtering performance of stream.

Bugs

  • Fix the bug that topN query doesn't return when an error occurs.
  • Data race in the hot series index selection.
  • Remove SetSchema from measure cache which could change the schema in the cache.
  • Fix duplicated items in the query aggregation top-n list.
  • Fix non-"value" field in topN pre-calculation result measure is lack of data.
  • Encode escaped characters to int64 bytes to fix the malformed data.

0.6.0

Features

  • Support etcd client authentication.
  • Implement Local file system.
  • Add health check command for bydbctl.
  • Implement Inverted Index for SeriesDatabase.
  • Remove Block Level from TSDB.
  • Remove primary index.
  • Measure column-based storage:
    • Data ingestion and retrieval.
    • Flush memory data to disk.
    • Merge memory data and disk data.
  • Stream column-based storage:
    • Data ingestion and retrieval.
    • Flush memory data to disk.
    • Merge memory data and disk data.
  • Add HTTP services to TopNAggregation operations.
  • Add preload for the TopN query of index.
  • Remove "TREE" index type. The "TREE" index type is merged into "INVERTED" index type.
  • Remove "Location" field on IndexRule. Currently, the location of index is in a segment.
  • Remove "BlockInterval" from Group. The block size is determined by the part.
  • Support querying multiple groups in one request.

Bugs

  • Fix the bug that property merge new tags failed.
  • Fix CPU Spike and Extended Duration in BanyanDB's etcd Watching Registration Process.
  • Fix panic when closing banyand.
  • Fix NPE when no index filter in the query.

Chores

  • Bump go to 1.22.
  • Bump node to 2.12.2.
  • Bump several tools.
  • Bump all dependencies of Go and Node.
  • Combine banyand and bydbctl Dockerfile.
  • Update readme for bydbctl

0.5.0

Features

  • List all properties in a group.
  • Implement Write-ahead Logging
  • Document the clustering.
  • Support multiple roles for banyand server.
  • Support for recovery buffer using wal.
  • Register the node role to the metadata registry.
  • Implement the remote queue to spreading data to data nodes.
  • Implement the distributed query engine.
  • Add mod revision check to write requests.
  • Add TTL to the property.
  • Implement node selector (e.g. PickFirst Selector, Maglev Selector).
  • Unified the buffers separated in blocks to a single buffer in the shard.

Bugs

  • BanyanDB ui unable to load icon.
  • BanyanDB ui type error
  • Fix timer not released
  • BanyanDB ui misses fields when creating a group
  • Fix data duplicate writing
  • Syncing metadata change events from etcd instead of a local channel.
  • Fix parse environment variables error.
  • Fix console warnings in dev mod, and optimize vite configuration for proxy.

Chores

  • Bump several dependencies and tools.
  • Drop redundant "discovery" module from banyand. "metadata" module is enough to play the node and shard discovery role.

0.4.0

Features

  • Add TSDB concept document.
  • [UI] Add YAML editor for inputting query criteria.
  • Refactor TopN to support NULL group while keeping seriesID from the source measure.
  • Add a sharded buffer to TSDB to replace Badger's memtable. Badger KV only provides SST.
  • Add a meter system to control the internal metrics.
  • Add multiple metrics for measuring the storage subsystem.
  • Refactor callback of TopNAggregation schema event to avoid deadlock and reload issue.
  • Fix max ModRevision computation with inclusion of TopNAggregation
  • Enhance meter performance
  • Reduce logger creation frequency
  • Add units to memory flags
  • Introduce TSTable to customize the block's structure
  • Add /system endpoint to the monitoring server that displays a list of nodes' system information.
  • Enhance the liaison module by implementing access logging.
  • Add the Istio scenario stress test based on the data generated by the integration access log.
  • Generalize the index's docID to uint64.
  • Remove redundant ID tag type.
  • Improve granularity of index in measure by leveling up from data point to series.
  • [UI] Add measure CRUD operations.
  • [UI] Add indexRule CRUD operations.
  • [UI] Add indexRuleBinding CRUD operations.

Bugs

  • Fix iterator leaks and ensure proper closure and introduce a closer to guarantee all iterators are closed
  • Fix resource corrupts caused by update indexRule operation
  • Set the maximum integer as the limit for aggregation or grouping operations when performing aggregation or grouping operations in a query plan.

Chores

  • Bump go to 1.20.
  • Set KV's minimum memtable size to 8MB
  • [docs] Fix docs crud examples error
  • Modified TestGoVersion to check for CPU architecture and Go Version
  • Bump node to 18.16

0.3.1

Bugs

  • Fix the broken of schema chain.
  • Add a timeout to all go leaking checkers.

Chores

  • Bump golang.org/x/net from 0.2.0 to 0.7.0.

0.3.0

Features

  • Support 64-bit float type.
  • Web Application.
  • Close components in tsdb gracefully.
  • Add TLS for the HTTP server.
  • Use the table builder to compress data.

Bugs

  • Open blocks concurrently.
  • Sync index writing and shard closing.
  • TimestampRange query throws an exception if no data in this time range.

Chores

  • Fixes issues related to leaked goroutines.
  • Add validations to APIs.

For more details by referring to milestone 0.3.0

0.2.0

Features

  • Command line tool: bydbctl.
  • Retention controller.
  • Full-text searching.
  • TopN aggregation.
  • Add RESTFul style APIs based on gRPC gateway.
  • Add "exists" endpoints to the schema registry.
  • Support tag-based CRUD of the property.
  • Support index-only tags.
  • Support logical operator(and & or) for the query.

Bugs

  • "metadata" syncing pipeline complains about an "unknown group".
  • "having" semantic inconsistency.
  • "tsdb" leaked goroutines.

Chores

  • "tsdb" structure optimization.
    • Merge the primary index into the LSM-based index
    • Remove term metadata.
  • Memory parameters optimization.
  • Bump go to 1.19.

For more details by referring to milestone 0.2.0

0.1.0

Features

  • BanyanD is the server of BanyanDB
    • TSDB module. It provides the primary time series database with a key-value data module.
    • Stream module. It implements the stream data model's writing.
    • Measure module. It implements the measure data model's writing.
    • Metadata module. It implements resource registering and property CRUD.
    • Query module. It handles the querying requests of stream and measure.
    • Liaison module. It's the gateway to other modules and provides access endpoints to clients.
  • gRPC based APIs
  • Document
    • API reference
    • Installation instrument
    • Basic concepts
  • Testing
    • UT
    • E2E with Java Client and OAP