| Commit message (Collapse) | Author | Age | Files | Lines |
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Now, the vector<> is part of the user-defined type, not required by the
framework. This should allow for more flexibility in either using
alternative containers, or for more sensible implementations of queries
with single value results (like range count).
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* Query Interface Adjustments/Refactoring
Began the process of adjusting the query interface (and also the shard
interface, to a lesser degree) to better accommodate the user. In
particular the following changes have been made,
1. The number of necessary template arguments for the query type
has been drastically reduced, while also removing the void pointers
and manual delete functions from the interface.
This was accomplished by requiring many of the sub-types associated
with a query (parameters, etc.) to be nested inside the main query
class, and by forcing the SHARD type to expose its associated
record type.
2. User-defined query return types are now supported.
Queries no longer are required to return strictly sets of records.
Instead, the query now has LocalResultType and ResultType
template parameters (which can be defaulted using a typedef in
the Query type itself), allowing much more flexibility.
Note that, at least for the short term, the LocalResultType must
still expose the same is_deleted/is_tombstone interface as a
Wrapped<R> used to, as this is currently needed for delete
filtering. A better approach to this is, hopefully, forthcoming.
3. Updated the ISAMTree.h shard and rangequery.h query to use the
new interfaces, and adjusted the associated unit tests as well.
4. Dropped the unnecessary "get_data()" function from the ShardInterface
concept.
5. Dropped the need to specify a record type in the ShardInterface
concept. This is now handled using a required Shard::RECORD
member of the Shard class itself, which should expose the name
of the record type.
* Updates to framework to support new Query/Shard interfaces
Pretty extensive adjustments to the framework, particularly to the
templates themselves, along with some type-renaming work, to support
the new query and shard interfaces.
Adjusted the external query interface to take an rvalue reference, rather
than a pointer, to the query parameters.
* Removed framework-level delete filtering
This was causing some issues with the new query interface, and should
probably be reworked anyway, so I'm temporarily (TM) removing the
feature.
* Updated benchmarks + remaining code for new interface
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Necessary updates to get the codebase building under OpenBSD 7.5 with
clang. This is a minimal set of changes to get building to work, which
includes disabling several things that aren't directly compatable. More
work will be necessary to get full functionality. In particular, Triespline,
PGM, and the reference M-tree do not currently build on OpenBSD with clang
due to GNU dependencies or other gcc specific features.
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Added a ReconVector type to make it easier to do load balancing by
shifting tasks around, and clean up a few interfaces.
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Tweak the reconstruction trigger code to ensure that multiple
reconstructions won't be triggered at the same time.
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Need to figure out the best way to do the detailed tracking in
a concurrent manner. I was thinking just an event log, with parsing
routines for extracting statistics. But that'll be pretty slow.
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A poorly organized commit with fixes for a variety of bugs that were
causing missing records. The core problems all appear to be fixed,
though there is an outstanding problem with tombstones not being
completely canceled. A very small number are appearing in the wrong
order during the static structure test.
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It isn't working right now (lotsa test failures), but we're to the
debugging phase now.
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Clarified the reasoning for a few things in comments that just tripped
me up during debugging.
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Currently, proactive buffer tombstone compaction is disabled by forcing
the buffer tombstone capacity to match its record capacity. It isn't
clear how to best handle proactive buffer compactions in an environment
where new buffers are spawned anyway.
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In InternalLevel::clone(), the m_shard_cnt variable was not being set
appropriately in the clone, resulting in the record counts reported for
a multi-shard level to be reported incorrectly.
In DynamicExtension::merge(), the merges were being performed in the
wrong order, resulting in multi-level merges deleting records. The
leveling tests all passed even with this bug for some reason, but it
caused tiering tests to fail. It isn't clear _why_ leveling appeared to
work, but the bug is now fixed, so that's largely irrelevant I suppose.
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