revert #23 (sync access to fast node cache), fix bug related to old height export #33
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ValarDragon
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| @@ -789,6 +792,7 @@ func (tree *MutableTree) getUnsavedFastNodeRemovals() map[string]interface{} { | |||
| func (tree *MutableTree) addUnsavedAddition(key []byte, node *FastNode) { | |||
| delete(tree.unsavedFastNodeRemovals, string(key)) | |||
| tree.unsavedFastNodeAdditions[string(key)] = node | |||
| tree.ndb.cacheFastNode(node) | |||
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Why are we caching immediately?
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This is just a revert of the faulty merged in commit. I will come back to this and address it
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* Add unbounded key string to KeyFormat * Add test vectors for unbounded length keys * Add some notes * update .gitignore * Add FastNode struct * WIP: make Get work with new FastNode * when retrieving fastnode fails, return errors vs. panic * add comments clarifying what index represents * make the linter happy * Add small tweaks to fast_node.go * add TODO & small linter tweaks * Update comment * update fast node cache in set * add debugging output when falling back to original logic * return error instead of panic * WIP: refactor set ops to work with fast store * update Set of mutable tree, begin unit testing * update GetVersioned to check fast nodes before trying the immutable * check fast node version before nil value check in get of immutable tree * fix small bugs and typos, continue writing unit tests for Set * unit test saveFastNodeVersion * simplify storing unsaved fast nodes * resolve a bug with not writing prefix for fast node to disk * remove fast nodes from disk on save and clear fast cache when version is deleted, fix all tests but random and with index * resolve an issue with randomized tests caused by the fast node cache not being cleared when latest version is saved * split unsaved fast node changes into additions and removals * save fast node removals * move fast node cache clearing to nodedb * use regular logic only when fast node version is greater than immutable tree' * clean up tree_random_test.go * clear unsaved fast node removals on rollback * fix randomized test failures caused by a typo in ndb DeleteVersion for loop * implement GetFast method to preserve Get with correct index return, convert unit tests from Get to GetFast where applicable * ensure Get and GetFast return the same values in tree_random_test.go * test fast node cache is live in random tree tests * improve mutable tree unit tests related to new functionality * clean up tree_test.go * implement GetVersionedFast to preserve the index in GetVersioned * restore accidentally deleted test in mutable tree test * spurious whitespace * refactor mutable tree * fix comment in mutable tree * add benchmark results * avoid redundant full tree search in GetFast of immutable tree when fast node is nil and tree is latest * fix naming for bench test get on random keys * use method for get latestversio in get fast * optimize GetFast, perform a refactor to ensure that fast nodes on disk are matched and better test * add latest bench * Fast Node Iteration (osmosis-labs#7) * propagate errors from nodedb and avoid panicking * begin implementing fast node iteration * resolve rebase issue in random tests * fix iteration to deserialize fast node for extracting the correct value * finalzie iteration and let all unit tests pass * add benchmarks * merge GetVersioned and GetVersionedFast * remove fast node deletion from DeleteVersion and DeleteVersionRange and benchmark * fix and unit test iteration on mutable and immutable trees * implement tests for iterator and iterate, begin testing fast iterator * fix and unit test fast iterator * refactor iterate methods of mutable and immutable trees * resolve some warnings * remove old bench results * refactor bench tests for iteration * Fast Cache Migration (osmosis-labs#9) * implement nodedb changes to set and get chain version from the database * implement and unit test upgrade to fast storage in mutable tree * refactor for auto upgrade to fast version in mutable tree contructor, load version and lazy load version * use proper functionality for getting latest version * remove unused error * fix comment * use fast version value in tests * spurious tab * fix style problems and remove redundant code in tests * Rename Get to GetWithIndex and GetFast to Get * refactor and clean up bench tests * remove extra byte from fast node length * clean up immutable tree * refactor nil tree or ndb error for the iterators and their tests * avoid exporting methods for getting unsaved additions and removals * refactor fast upgrade to read from tree instead of traversing disk nodes and orphans, update unit tests * remove unneeded comment * refer to storage version consistently across the project * fix more warnings * optimize removal of fast nodes from cache on deletion * small changes in teh mutable tree * correct storage version key * auto set fast version in SaveVersion * avoid exporting new methods of the immutable tree * go fmt * Fix comment in fast iterator Co-authored-by: Dev Ojha <[email protected]> * add extra comment for domain in fast iterator Co-authored-by: Dev Ojha <[email protected]> * add comments for moving the iterator before the first element * add comment for describing what mirror is in assertIterator of testutils * fix checking the mirror for descending iterator in tests * Update testutils_test.go with a comment Co-authored-by: Dev Ojha <[email protected]> * Update benchmarks/bench_test.go with a comment for runKnownQueriesFast Co-authored-by: Dev Ojha <[email protected]> * Update benchmarks/bench_test.go with a comment for runQueriesFast Co-authored-by: Dev Ojha <[email protected]> * export IsFastCacheEnabled and add an assert in bench tests * Update comment immutable_tree.go Co-authored-by: Dev Ojha <[email protected]> * Update comment for migration in mutable_tree.go Co-authored-by: Dev Ojha <[email protected]> * simlify Iterate in mutable tree, add debug log for * Fast Cache - Downgrade - reupgrade protection and other improvements (osmosis-labs#12) * add leaf hash to fast node and unit test * refactor get with index and get by index, fix migration in load version and lazy load version * use Get in GetVersioned of mutable tree * refactor non membership proof to use fast storage if available * bench non-membership proof * fix bench tests to work with the new changes * add downgrade-reupgrade protection and unit test * remove leaf hash from fast node * resolve multithreading bug related to iterators not being closed * clean up * use correct tree in bench tests * add cache to tree used to bench non membership proofs * add benc tests for GetWithIndex and GetByIndex * revert GetWithIndex and GetByIndex * remove unused import * unit test re-upgrade protection and fix small issues * remove redundant setStorageVersion method * fix bug with appending to live stage version to storage version and nit test * add comment for setFastStorageVersionToBatch * refactor and improve unit tests for reupgrade protection * rename ndb's isFastStorageEnabled to hasUpgradedToFastStorage and add comments * comment out new implementation for GetNonMembershipProof * update comments in nodedb to reflect the difference between hasUpgradedToFastStorage and shouldForceFastStorageUpdate * refactor nodedb tests * downgrade tendermint to 0.34.14 - osmosis's latest cosmos sdk does not support 0.35.0 * fix bug where fast storage was not enabled when version 0 was attempted to be loaded * implement unsaved fast iterator to be used in mutable tree (osmosis-labs#16) * address comments from unsaved fast iterator PR * expose isUpgradeable method on mutable tree and unit test (osmosis-labs#17) * expose isUpgradeable method on mutable tree and unit test * go fmt * resolve problems with rebasing * update CHANGELOG.md * tendermint v0.35.0 * fix String() bench * fix duplication lint in iterator_test.go * fix lint for tree.ndb.DeleteFastNode error return not checked * fix Error return value of `ndb.resetBatch` is not checked * fix Error return value of `ndb.traversePrefix` is not checked * fix Error: struct of size 64 bytes could be of size 56 bytes * fix Error: `comitted` is a misspelling of `committed` * fix issues in basic_test.go * address comments in fast_iterator.go * address comments in immutable tree * address comments in iterator.go * address comments in key_format.go * address remaining comments * fix Error: Error return value of `ndb.batch.Write` is not checked * fix Error: receiver name t should be consistent with previous receiver name tree for MutableTree * fix Error: struct of size 48 bytes could be of size 40 bytes * go fmt * more linter fixes * fix remaining linter problems * upgrade tm-db and comment out broken bencher databases * skip iterations for BenchmarkLevelDBLargeData bench * attempt to fix linter * force GC, no cache during migration, auto heap profile (osmosis-labs#19) * force GC, no cache during migration, auto heap profile * resolve a potential deadlock from racing between reset and stop * fix small lint issue * remove logs and pprof logic * remove unused libraries * add comment explaining the reason for RAM optimizations * sync access to fast node cache to avoid concurrent write fatal error (osmosis-labs#23) * update go.mod and go.sum to match master versions * revert osmosis-labs#23 (sync access to fast node cache), fix bug related to old height export (osmosis-labs#33) * Revert "sync access to fast node cache to avoid concurrent write fatal error (osmosis-labs#23)" This reverts commit 2a1daf4. * return correct iterator in mutable tree * fix concurrent map panic when querying and comittting concurrently * avoid clearing fast node cache during pruning (osmosis-labs#35) * fix data race related to VersionExists (osmosis-labs#36) * fix data race related to VersionExists * use regular lock instead of RW in mutable_tree.go * hardcode fast node cache size to 100k * go fmt * restore proof_ics23.go * fix linter Co-authored-by: ValarDragon <[email protected]> Co-authored-by: jtieri <[email protected]> Co-authored-by: Dev Ojha <[email protected]> Co-authored-by: Roman Akhtariev <[email protected]> Co-authored-by: Roman <[email protected]>
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Background
When doing an export of an old height, many validators have encountered "panic - lock with id does not exist"
After investigation, it was found that although an older height was specified, a fast iterator was returned to iterate over locks. The fast iterator always gives the latest state. As a result, there was a lock mismatch observed.
This change only affected export, no database corruptions or other issues were observed or reported
#23 is reverted because it deadlocked during testing, need to spend more time on it