* Granule purge cannot delete history entry for fully deleting granule until all children are completely done splitting
* Several purging fixes related to granule history
* Fixed typo in refactor
* fixing memory model for purgeRange
* formatting
* weakening granule purge test for now
* cleanup
* review comments
* blob: read TenantMap during recovery
Future functionality in the blob subsystem will rely on the tenant data
being loaded. This fixes this issue by loading the tenant data before
completing recovery such that continued actions on existing blob
granules will have access to the tenant data.
Example scenario with failover, splits are restarted before loading the
tenant data:
BM - BlobManager
epoch 3: epoch 4:
BM record intent to split.
Epoch fails.
BM recovery begins.
BM fails to persist split.
BM recovery finishes.
BM.checkBlobWorkerList()
maybeSplitRange().
BM.monitorClientRanges().
loads tenant data.
bin/fdbserver -r simulation -f tests/slow/BlobGranuleCorrectness.toml \
-s 223570924 -b on --crash --trace_format json
* blob: add tuple key truncation for blob granule alignment
FDB has a backup system available using the blob manager and blob
granule subsystem. If we want to audit the data in the blobs, it's a lot
easier if we can align them to something meaningful.
When a blob granule is being split, we ask the storage metrics system
for split points as it holds approximate data distribution metrics.
These keys are then processed to determine if they are a tuple and
should be truncated according to the new knob,
BG_KEY_TUPLE_TRUNCATE_OFFSET.
Here we keep all aligned keys together in the same granule even if it is
larger than the allowed granule size. The following commit will address
this by adding merge boundaries.
* blob: minor clean ups in merging code
1. Rename mergeNow -> seen. This is more inline with clocksweep naming
and removes the confusion between mergeNow and canMergeNow.
2. Make clearMergeCandidate() reset to MergeCandidateCannotMerge to make
a clear distinction what we're accomplishing.
3. Rename canMergeNow() -> mergeEligble().
* blob: add explicit (hard) boundaries
Blob ranges can be specified either through explicit ranges or at the
tenant level. Right now this is managed implicitly. This commit aims to
make it a little more explicit.
Blobification begins in monitorClientRanges() which parses either the
explicit blob ranges or the tenant map. As we do this and add new
ranges, let's explicitly track what is a hard boundary and what isn't.
When blob merging occurs, we respect this boundary. When a hard boundary
is encountered, we submit the found eligible ranges and start looking
for a new range beginning with this hard boundary.
* blob: create BlobGranuleSplitPoints struct
This is a setup for the following commit. Our goal here is to provide a
structure for split points to be passed around. The need is for us to be
able to carry uncommitted state until it is committed and we can apply
these mutations to the in-memory data structures.
* blob: implement soft boundaries
An earlier commit establishes the need to create data boundaries within
a tenant. The reality is we may encounter a set of keys that degnerate
to the same key prefix. We'll need to be able to split those across
granules, but we want to ensure we merge the split granules together
before merging with other granules.
This adds to the BlobGranuleSplitPoints state of new
BlobGranuleMergeBoundary items. BlobGranuleMergeBoundary contains state
saying if it is a left or right boundary. This information is used to,
like hard boundaries, force merging of like granules first.
We read the BlobGranuleMergeBoundary map into memory at recovery.
* Add getRange test coverage for SpecialKeyRangeAsyncImpl
* Fix the bug in SpecialKeyRangeAsyncImpl found by the test
* Refactor ConflictingKeysImpl::getRange to use containedRanges to simplify the code
* Fix file format
* Initialize SpecialKeyRangeAsyncImpl cache with correct end key
* Add release notes
* Revert "Refactor ConflictingKeysImpl::getRange to use containedRanges to simplify the code"
This reverts commit fdd298f469bf73b107e5ca29072c49774820d3d6.
* 'main' of github.com:sfc-gh-nwijetunga/foundationdb: (42 commits)
Get ShardedRocks ready for simulation test. (#7679)
fixing specific unit test
formatting
addressing review comments
Fix incorrect deserialization of FdbClientLogEvents::Event (#7707)
Fix a crash bug during CC shutdown process (#7705)
addressing review comments
remove runAfter
Add comments explaining the use of the TransactionState tenant() and hasTenant() functions
Make sure resumeFromDataMoves() starts after resumeFromShards().
Fix: during recovery, it was possible for tenant operations to briefly fail because the tenant mode is not known
formatting
Fixed granule purging bug and improved debugging for purging
making purge failures fail test
cleanup and polish
Bug fix and cleanup
First version of key-sorted delta files
Added full granule read unit test
Completed delta format unit test
delta file test and delta generation
...
* Disabled tests for ShardedRocks.
Cleaned up ShardedRocks TraceEvent.
Added assertion in ShardManager::validate().
* Added test trace.
* Make sure TraceEvent contains `ShardedRocks`.
Co-authored-by: He Liu <heliu@apple.com>
