Julius Volz
7e85711df0
Beginnings of a tiered index implementation.
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This reintroduces a LevelDB-based metrics index.
Change-Id: I4111540301c52255a07b2f570761707a32f72c05
2014-11-25 17:02:00 +01:00
Julius Volz
8dfaa5ecd2
Remove use of freelists for chunk bufs.
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Change-Id: Ib887fdb61e1d96da0cd32545817b925ba88831c1
2014-11-25 17:02:00 +01:00
Julius Volz
7b35e0f0b8
Use constants from math package instead of literals.
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Change-Id: I55427ba32c2cbb32ee42ec1e3153160965ab8b3c
2014-11-25 17:02:00 +01:00
Julius Volz
15929eece2
Unpin any already loaded chunks upon preloading error.
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Change-Id: Ib451136e3ef21bce8b814c21b66eaab727ab341b
2014-11-25 17:02:00 +01:00
Julius Volz
fd01d07589
Check that chunk buffer length fits in 16 bit.
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Change-Id: Id086a54aa8a1990c1979e747c1c02e53bed6d447
2014-11-25 17:02:00 +01:00
Bjoern Rabenstein
1ca7f24137
Remove float diff tolerance altogether.
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Change-Id: I9ea9683a4665d5800fca75560bb4b8a8b4406d55
2014-11-25 17:02:00 +01:00
Bjoern Rabenstein
d742edfe0d
Fix precision loss.
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Large delta values often imply a difference between a large base value
and the large delta value, potentially resulting in small numbers with
a huge precision error. Since large delta values need 8 bytes anyway,
we are not even saving memory.
As a solution, always save the absoluto value rather than a delta once
8 bytes would be needed for the delta. Timestamps are then saved as 8
byte integers, while values are always saved as float64 in that case.
Change-Id: I01100d600515e16df58ce508b50982ffd762cc49
2014-11-25 17:02:00 +01:00
Bjoern Rabenstein
dc2e463a97
Improvements after review.
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Change-Id: I484359282d4c7113518bbbb131f4f18383c08fdb
2014-11-25 17:02:00 +01:00
Bjoern Rabenstein
52c9dc43a3
Improve testing.
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In particular, create a fuzz test for time series.
Change-Id: I523a17912405a0b6b46bd395c781d201dfe55036
2014-11-25 17:02:00 +01:00
Julius Volz
3b25867d61
Add chunk persistence tests, fix storage tests.
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Change-Id: Id0b8f5382e99efa839cc0f826e92bbda985fe9a9
2014-11-25 17:02:00 +01:00
Bjoern Rabenstein
ecdf5ab14f
Index-persistence switched from gob to a hand-coded solution.
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Change-Id: Ib4ec42535bd08df16d34d4774bb638e35c5a1841
2014-11-25 17:02:00 +01:00
Julius Volz
e7ed39c9a6
Initial experimental snapshot of next-gen storage.
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Change-Id: Ifb8709960dbedd1d9f5efd88cdd359ee9fa9d26d
2014-11-25 17:02:00 +01:00
