* Implemented collector metadata logging
* Added persistent GUIDs for charts and dimensions
* Added metadata log replay and automatic compaction
* Added detection of charts with no active collector (archived)
* Added new endpoint to report archived charts via `/api/v1/archivedcharts`
* Added support for collector metadata update
Co-authored-by: Markos Fountoulakis <44345837+mfundul@users.noreply.github.com>
* fix_db_race_condition: unit test
Adjust unit test for dbengine
* fix_db_race_condition: page cache
Fix database
* fix_db_race_condition: Missing function call
This commit brings the correct function call inside rrdengine.c
* Removed support for 16-bit and 8-bit counter overflow
* Improve behaviour of counter overflow detection versus counter resets.
* Added support for signed 32-bit and 64-bit limits for counter overflows.
* Fixed signed incremental counter issues and added unit tests.
* Basic functionality for dbengine stress test.
* Fix coverity defects
* Refactored dbengine stress test to be configurable
* Added benchmark results and evaluation in dbengine documentation
* Make dbengine the default memory mode
* Fix memory corruption during deallocation of page cache
* Refactored dataset generator in order to support the upcoming self-validating stress test and multithreading.
* Fix starvation in database engine loop when the command queues are continuously populated
* Fixing disk quota limits for dbengine dataset generator
* Variable Granularity support for data collection in the dbengine.
* Variable Granularity support for data collection in the daemon.
* Added tests to validate the data being queried after having been collected by changing data collection interval
* Fix memory corruption
* Updated database engine documentation about data collection frequency behaviour
* Database engine prototype version 0
* Database engine initial integration with netdata POC
* Scalable database engine with file and memory management.
* Database engine integration with netdata
* Added MIN MAX definitions to fix alpine build of travis CI
* Bugfix for backends and new DB engine, remove useless rrdset_time2slot() calls and erroneous checks
* DB engine disk protocol correction
* Moved DB engine storage file location to /var/cache/netdata/{host}/dbengine
* Fix configure to require openSSL for DB engine
* Fix netdata daemon health not holding read lock when iterating chart dimensions
* Optimized query API for new DB engine and old netdata DB fallback code-path
* netdata database internal query API improvements and cleanup
* Bugfix for DB engine queries returning empty values
* Added netdata internal check for data queries for old and new DB
* Added statistics to DB engine and fixed memory corruption bug
* Added preliminary charts for DB engine statistics
* Changed DB engine ratio statistics to incremental
* Added netdata statistics charts for DB engine internal statistics
* Fix for netdata not compiling successfully when missing dbengine dependencies
* Added DB engine functional test to netdata unittest command parameter
* Implemented DB engine dataset generator based on example.random chart
* Fix build error in CI
* Support older versions of libuv1
* Fixes segmentation fault when using multiple DB engine instances concurrently
* Fix memory corruption bug
* Fixed createdataset advanced option not exiting
* Fix for DB engine not working on FreeBSD
* Support FreeBSD library paths of new dependencies
* Workaround for unsupported O_DIRECT in OS X
* Fix unittest crashing during cleanup
* Disable DB engine FS caching in Apple OS X since O_DIRECT is not available
* Fix segfault when unittest and DB engine dataset generator don't have permissions to create temporary host
* Modified DB engine dataset generator to create multiple files
* Toned down overzealous page cache prefetcher
* Reduce internal memory fragmentation for page-cache data pages
* Added documentation describing the DB engine
* Documentation bugfixes
* Fixed unit tests compilation errors since last rebase
* Added note to back-up the DB engine files in documentation
* Added codacy fix.
* Support old gcc versions for atomic counters in DB engine
