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NEWS
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OpenTSDB - User visible changes.
* Version 2.1.1.1 (2015-10-08)
Changes:
- Backport /api/uid/rename from next to master branch
* Version 2.1.1 (2015-09-12)
Bug Fixes:
- Relax the pgrep regex to correctly find and kill the java process in the RPM init.d
script.
- Improve query performance slightly when aggregating multiple series.
- Fix the /api/search/lookup API call to properly handle the limit parameter.
- Fix the /api/query/last endpoint to properly handle missing tsdb-meta tables.
* Version 2.1.0 (2015-05-06)
Bug Fixes:
- FSCK was not handling compacted and floating point duplicates properly. Now they
are merged correctly.
- TSMeta data updates were not loading the latest data from storage on response
- The config class will now trim spaces from booleans and integers
- On shutdown, the idle state handler could prevent the TSD from shutting down
gracefully. A new thread factory sets that thread as a daemon thread.
- TSMeta objects were not generated if multiple writes for the same data point arrived
in succession due to buffering atomic increments. Increments are no longer buffered.
- Updated paths to the deprecated Google Code repo for dependencies.
* Version 2.1.0 RC2 (2015-04-04)
Noteworthy Changes:
- Handle idle connections in Netty by closing them after some period of inactivity
- Support compressed HTTP responses
Bug Fixes:
- Various RPM script and package fixes
- Properly handle deletions of the cache directory while running
- Queries for non-extant metrics now return a 400 error
- Fix an issue with the meta sync utility where entries were not created if the counter existed
- Report stats properly when the UID is greater than 3 bytes wide
- Fix UI hangups when incorrect tags are supplied
- Log illegal put exceptions at the debug level
- Fix global annotation retrieval where some entries were missing
- Fix unit tests that were not properly mocking out clients or threads and causing JVM OOMs
- Fix accounting bugs in FSCK
- Sort aggregators in the UI
- Properly throw an exception if the user supplies an empty tag on storage or retreival
- Handle missing directories in the Config class
* Version 2.1.0 RC1 (2014-11-09)
Noteworthy Changes:
- Add a server side timeout for sockets that haven't written data in some time
- Major FSCK utility update to handle new objects, delete bad data and deal with duplicate data points.
- Optionally preload portions of the name to UID maps at startup
- Add read and write modes to the TSD to disable writing data points via telnet or HTTP
- Optionally disable the diediedie commands to prevent users from shutting down a tsd
- Optionally block the auto creation of tag keys and values
- Downsampling is now aligned on modulus bondaries so that we avoid interpolation as much as possible. Data returned is now more along the lines of what users expect, e.g. 24 data points for day when downsampled on hourly intervals instead of random points based on the span's timestamps.
- Add the /api/search/lookup endpoint and CLI endpoint for looking up time series based on the meta or data tables
- Rework of the TSD compaction code to process compactions faster
- Optionally handle duplicate data points gracefully during compaction or query time without throwing exceptions
- Add Allow-Headers CORs support
* Version 2.0.1 (2014-11-09)
Bug Fixes:
- Fix tree REST endpoint to allow modification of the strictMatch and storeFailure fields
- Fix compacted millisecond columns throwing an error during fsck
- Fix tsd startup directory permission checks
- Fix thread safety of pending UID assignment when they are complete
- Fix compaction queue flushing on tsd shutdown
- Fix RTPublisher plugin floating point value detection where it was previously posting to the wrong method
- Fix TsdbQuery.toString() to avoid looing up UIDs if an error was thrown as this can cause cause a deadlock
Noteworthy changes:
- Add Travis CI build support
- Update to Asynchbase 1.6.0 and update additional dependencies
- Modify scripts to allow easier compilation under FreeBSD
* Version 2.0.0 (2014-05-5)
API incompatible changes:
- The `TSDB' class now takes a `Config' object in argument instead of an
HBaseClient and two strings.
- The downsampling interval for the method `Query.downsample' went from
being an `int' to a `long'.
Noteworthy changes:
- Configuration can be provided in a properties file
- New Jackson JSON helper class
- GnuPlot batch file for Windows compatability
- Add relative time option "n" for 30 days
- Relative, unix epoch style timestamps work in CliQuery
- New "max" parameter for /suggest that can fetch more than the default 25
results. If not supplied, default is used
- New formalized HTTP API, deprecates many of the old HTTP API calls but it
is still backwards compatible
- New store data points over HTTP via JSON
- New annotations for recording meta data along with data points in a time
series
- New global annotations to record meta data at a specific time but not
associated with a specific series
- New meta data for metrics, tag names, tag values and time series
- New optional chunked encoding support for HTTP requests, configurable
- Millisecond resolution support for writing data points and annotations
- Variable length encoding for integer data points, any where from 1 to 8
bytes instead of using 8 bytes for every point
- CORs support for the HTTP API
- New data injest plugin framework allowing support for different data
formats
- Search plugin framework to push meta data to a search engine for access
- Real-Time publisher framework to publish data points to a secondary system
as soon as they are received at the TSD
- New aggregation functions with alternatives to interpolation including:
- zero if missing sum: returns a 0 if a data point doesn't exist
- max if missing min: returns the maximum value if a data point is missing
- min if missing max: returns the minimum value if a data point is missing
- New TSUID tracking that writes a counter to a new table to track the
different time series stored and how many data points were written
- New meta data trees that allow for flattening time series into a
heirarchical representation similar to a file system
- New meta and tree synchronization CLI tools
- New statistics showing the number of UIDs used and available for each type
- New statistics for the number of current connections to the TSD
- New options for working with rate calculations on counters to rollover
or reset on anomallys
- New Debian package compilable from the source
- New RPM package compilable from the source
* Version 1.1.1 (2013-??-??) [???????]
Noteworthy changes:
- UIDs are now assigned in a lock-less fashion.
* Version 1.1.0 (2013-03-08) [12879d7]
Noteworthy changes:
- Licensing adjustment: allow LGPLv2.1+ in addition to LGPLv3+.
- Various fixes used when customizing size of UniqueId. The default size
is 3 bytes and is a compile-time constant rarely changed in practice.
- New a new standard deviation aggregator, `dev'.
- New `fgcolor', `bgcolor' and `smooth' query parameters to /q.
- New `tz' query string parameter to allow specifying a custom time zone.
- Stop accepting connections when shutting down.
- A new `dropcaches' administrative command allows discarding in-memory
caches. Right now these are UID mappings.
- Browser history support in the web UI.
- Allow "1d-ago" style input in date boxes.
- Fix the 30d integer overflow in the web UI.
- Add the ability to use mouse for drag-to-zoom on graphs.
- Integration with Maven.
- Work around a Netty performance bug, increasing write throughput by 10x.
- Properly parse floating point values in scientific notations.
- Allow tuning the number of worker threads or using OIO.
- Fix auto-completion bug causing partial results to show in the web UI.
- Various internal bug fixes.
- Update all dependencies.
- TSDB data compaction is now enabled by default.
* Version 1.0.0 (2011-12-23) [66a6b42]
Initial release:
- Upload data points through a telnet-style protocol.
- HTTP interface to query data in ASCII and PNG.
- Efficient, fully asynchronous write path.
- Synchronous / blocking read path (to be rewritten).
- TSDB data compaction (disabled by default).
-----
Copyright (C) 2011-2012 The OpenTSDB Authors.
This library is free software: you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation, either version 2.1 of the License, or
(at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this library. If not, see <http://www.gnu.org/licenses/>.
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