Release v0.3.0 (#464)

CHANGELOG.md

@@ -1,7 +1,10 @@
 ## master / unreleased
 
- - `LastCheckpoint` used to return just the segment name and now it returns the full relative path.
+## 0.3.0
- - `NewSegmentsRangeReader` can now read over miltiple wal ranges by using the new `SegmentRange` struct.
+
- - `CorruptionErr` now also exposes the Segment `Dir` which is added when displaying any errors.
+ - [CHANGE] `LastCheckpoint()` used to return just the segment name and now it returns the full relative path.
- - `Head.Init()` is changed to `Head.Init(minValidTime int64)` where `minValidTime` is taken from the maxt of the last persisted block and any samples below `minValidTime` will not be loaded from the wal in the head. The same value is used when using the `Heah.Appender()` to disallow adding samples below the `minValidTime` timestamp. This change was nececary to fix a bug where a `Snapshot()` with the head included would create a block with custom time range(not bound to the default time ranges) and the next block population from the head would create an overlapping block.  
+ - [CHANGE] `NewSegmentsRangeReader()` can now read over miltiple wal ranges by using the new `SegmentRange{}` struct.
-    - https://github.com/prometheus/tsdb/issues/446
+ - [CHANGE] `CorruptionErr{}` now also exposes the Segment `Dir` which is added when displaying any errors.
+ - [CHANGE] `Head.Init()` is changed to `Head.Init(minValidTime int64)`  
+ - [CHANGE] `SymbolTable()` renamed to `SymbolTableSize()` to make the name consistent with the  `Block{ symbolTableSize uint64 }` field.
+ - [CHANGE] `wal.Reader{}` now exposes `Segment()` for the current segment being read  and `Offset()` for the current offset.

index/index.go

@@ -868,7 +868,7 @@ func (r *Reader) Symbols() (map[string]struct{}, error) {
 	return res, nil
 }
 
-// SymbolTable returns the symbol table that is used to resolve symbol references.
+// SymbolTableSize returns the symbol table that is used to resolve symbol references.
 func (r *Reader) SymbolTableSize() uint64 {
 	var size int
 	for _, s := range r.symbols {