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nimbus-eth1/nimbus/sync/snap/worker/db/hexary_error.nim

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Snap sync accounts db code reorg (#1189) * Extracted functionality into sub-modules for maintainability * Setting SST bulk load as default in `accounts_db` details: + currently, the same data are stored via rocksdb if available, and the same via embedded `storage_type` with (non-standard) prefix 200 for time comparisons + fallback to normal `put()` unless rocksdb is accessible
2022-08-15 15:51:50 +00:00
# nimbus-eth1
# Copyright (c) 2021 Status Research & Development GmbH
# Licensed under either of
# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
# http://www.apache.org/licenses/LICENSE-2.0)
# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
# http://opensource.org/licenses/MIT)
# at your option. This file may not be copied, modified, or distributed
# except according to those terms.
type
HexaryDbError* = enum
NothingSerious = 0
AccountNotFound
AccountsNotSrictlyIncreasing
AccountRangesOverlap
Prep for full sync after snap make 6 (#1291) * Update log ticker, using time interval rather than ticker count why: Counting and logging ticker occurrences is inherently imprecise. So time intervals are used. * Use separate storage tables for snap sync data * Left boundary proof update why: Was not properly implemented, yet. * Capture pivot in peer worker (aka buddy) tasks why: The pivot environment is linked to the `buddy` descriptor. While there is a task switch, the pivot may change. So it is passed on as function argument `env` rather than retrieved from the buddy at the start of a sub-function. * Split queues `fetchStorage` into `fetchStorageFull` and `fetchStoragePart` * Remove obsolete account range returned from `GetAccountRange` message why: Handler returned the wrong right value of the range. This range was for convenience, only. * Prioritise storage slots if the queue becomes large why: Currently, accounts processing is prioritised up until all accounts are downloaded. The new prioritisation has two thresholds for + start processing storage slots with a new worker + stop account processing and switch to storage processing also: Provide api for `SnapTodoRanges` pair of range sets in `worker_desc.nim` * Generalise left boundary proof for accounts or storage slots. why: Detailed explanation how this works is documented with `snapdb_accounts.importAccounts()`. Instead of enforcing a left boundary proof (which is still the default), the importer functions return a list of `holes` (aka node paths) found in the argument ranges of leaf nodes. This in turn is used by the book keeping software for data download. * Forgot to pass on variable in function wrapper also: + Start healing not before 99% accounts covered (previously 95%) + Logging updated/prettified
2022-11-08 18:56:04 +00:00
LowerBoundAfterFirstEntry
LowerBoundProofError
Prep for full sync after snap (#1253) * Split fetch accounts into sub-modules details: There will be separated modules for accounts snapshot, storage snapshot, and healing for either. * Allow to rebase pivot before negotiated header why: Peers seem to have not too many snapshots available. By setting back the pivot block header slightly, the chances might be higher to find more peers to serve this pivot. Experiment on mainnet showed that setting back too much (tested with 1024), the chances to find matching snapshot peers seem to decrease. * Add accounts healing * Update variable/field naming in `worker_desc` for readability * Handle leaf nodes in accounts healing why: There is no need to fetch accounts when they had been added by the healing process. On the flip side, these accounts must be checked for storage data and the batch queue updated, accordingly. * Reorganising accounts hash ranges batch queue why: The aim is to formally cover as many accounts as possible for different pivot state root environments. Formerly, this was tried by starting the accounts batch queue at a random value for each pivot (and wrapping around.) Now, each pivot environment starts with an interval set mutually disjunct from any interval set retrieved with other pivot state roots. also: Stop fishing for more pivots in `worker` if 100% download is reached * Reorganise/update accounts healing why: Error handling was wrong and the (math. complexity of) whole process could be better managed. details: Much of the algorithm is now documented at the top of the file `heal_accounts.nim`
2022-10-08 17:20:50 +00:00
NodeNotFound
Snap sync accounts healing (#1225) * Added inspect module why: Find dangling references for trie healing support. details: + This patch set provides only the inspect module and some unit tests. + There are also extensive unit tests which need bulk data from the `nimbus-eth1-blob` module. * Alternative pivot finder why: Attempt to be faster on start up. Also tying to decouple pivot finder somehow by providing different mechanisms (this one runs in `single` mode.) * Use inspect module for healing details: + After some progress with account and storage data, the inspect facility is used to find dangling links in the database to be filled nose-wise. + This is a crude attempt to cobble together functional elements. The set up needs to be honed. * fix scheduler to avoid starting dead peers why: Some peers drop out while in `sleepAsync()`. So extra `if` clauses make sure that this event is detected early. * Bug fixes causing crashes details: + prettify.toPC(): int/intToStr() numeric range over/underflow + hexary_inspect.hexaryInspectPath(): take care of half initialised step with branch but missing index into branch array * improve handling of dropped peers in alternaive pivot finder why: Strange things may happen while querying data from the network. Additional checks make sure that the state of other peers is updated immediately. * Update trace messages * reorganise snap fetch & store schedule
2022-09-16 07:24:12 +00:00
RlpEncoding
SlotsNotSrictlyIncreasing
Isolating sync action modules (#1249) * Miscellaneous updates TBC * Disentangled pivot2 module from snap why: Wrote as template on top of sync so it can be shared by fast and snap sync. * Renamed and relocated pivot sources * Integrated `best_pivot` module into full and snap sync why: Full sync used an older version of `best_pivot` * isolating download module from full sync why; might be shared with snap sync at a later stage
2022-09-30 08:22:14 +00:00
TrieLoopAlert
TrieIsEmpty
Snap sync can start on saved checkpoint (#1327) * Stop negotiating pivot if peer repeatedly replies w/usesless answers why: There is some fringe condition where a peer replies with legit but useless empty headers repetely. This goes on until somebody stops. We stop now. * Rename `missingNodes` => `sickSubTries` why: These (probably missing) nodes represent in reality fully or partially missing sub-tries. The top nodes may even exist, e.g. as a shallow sub-trie. also: Keep track of account healing on/of by bool variable `accountsHealing` controlled in `pivot_helper.execSnapSyncAction()` * Add `nimbus` option argument `snapCtx` for starting snap recovery (if any) also: + Trigger the recovery (or similar) process from inside the global peer worker initialisation `worker.setup()` and not by the `snap.start()` function. + Have `runPool()` returned a `bool` code to indicate early stop to scheduler. * Can import partial snap sync checkpoint at start details: + Modified what is stored with the checkpoint in `snapdb_pivot.nim` + Will be loaded within `runDaemon()` if activated * Forgot to import total coverage range why: Only the top (or latest) pivot needs coverage but the total coverage is the list of all ranges for all pivots -- simply forgotten.
2022-11-25 14:56:42 +00:00
TooManyProcessedChunks
Snap sync state save (#1302) * Piecemeal trie inspection details: Trie inspection will stop after maximum number of nodes visited. The inspection can be resumed using the returned state from the last session. why: This feature allows for task switch between `piecemeal` sessions. * Extract pivot helper code from `worker.nim` => `pivot_helper.nim` * Accounts import will now return dangling paths from `proof` nodes why: With proper bookkeeping, this can be used to start healing without analysing the the probably full trie. * Update `unprocessed` account range handling why: More generally, the API of a pairs of unprocessed intervals favours the first set and not before that is exhausted the second set comes into play. This was unfortunately implemented which caused the ranges to be unnecessarily fractioned. Now the number of range interval typically remains in the lower single digit numbers. * Save sync state after end of downloading some accounts details: restore/resume to be implemented later
2022-11-16 23:51:06 +00:00
TooManySlotAccounts
Snap sync accounts healing (#1225) * Added inspect module why: Find dangling references for trie healing support. details: + This patch set provides only the inspect module and some unit tests. + There are also extensive unit tests which need bulk data from the `nimbus-eth1-blob` module. * Alternative pivot finder why: Attempt to be faster on start up. Also tying to decouple pivot finder somehow by providing different mechanisms (this one runs in `single` mode.) * Use inspect module for healing details: + After some progress with account and storage data, the inspect facility is used to find dangling links in the database to be filled nose-wise. + This is a crude attempt to cobble together functional elements. The set up needs to be honed. * fix scheduler to avoid starting dead peers why: Some peers drop out while in `sleepAsync()`. So extra `if` clauses make sure that this event is detected early. * Bug fixes causing crashes details: + prettify.toPC(): int/intToStr() numeric range over/underflow + hexary_inspect.hexaryInspectPath(): take care of half initialised step with branch but missing index into branch array * improve handling of dropped peers in alternaive pivot finder why: Strange things may happen while querying data from the network. Additional checks make sure that the state of other peers is updated immediately. * Update trace messages * reorganise snap fetch & store schedule
2022-09-16 07:24:12 +00:00
# import
Snap fetch account storage data (#1211) * Removed database write comparison statistics * Provide life storage tests data details: database dumps on external repo `nimbus-eth1`-blobs` * Update hexary tree interpolation for storage bulk tests * fetch storage update
2022-09-02 18:16:09 +00:00
DifferentNodeValueExists
Snap sync accounts healing (#1225) * Added inspect module why: Find dangling references for trie healing support. details: + This patch set provides only the inspect module and some unit tests. + There are also extensive unit tests which need bulk data from the `nimbus-eth1-blob` module. * Alternative pivot finder why: Attempt to be faster on start up. Also tying to decouple pivot finder somehow by providing different mechanisms (this one runs in `single` mode.) * Use inspect module for healing details: + After some progress with account and storage data, the inspect facility is used to find dangling links in the database to be filled nose-wise. + This is a crude attempt to cobble together functional elements. The set up needs to be honed. * fix scheduler to avoid starting dead peers why: Some peers drop out while in `sleepAsync()`. So extra `if` clauses make sure that this event is detected early. * Bug fixes causing crashes details: + prettify.toPC(): int/intToStr() numeric range over/underflow + hexary_inspect.hexaryInspectPath(): take care of half initialised step with branch but missing index into branch array * improve handling of dropped peers in alternaive pivot finder why: Strange things may happen while querying data from the network. Additional checks make sure that the state of other peers is updated immediately. * Update trace messages * reorganise snap fetch & store schedule
2022-09-16 07:24:12 +00:00
ExpectedNodeKeyDiffers
Snap sync accounts db code reorg (#1189) * Extracted functionality into sub-modules for maintainability * Setting SST bulk load as default in `accounts_db` details: + currently, the same data are stored via rocksdb if available, and the same via embedded `storage_type` with (non-standard) prefix 200 for time comparisons + fallback to normal `put()` unless rocksdb is accessible
2022-08-15 15:51:50 +00:00
Rlp2Or17ListEntries
RlpBlobExpected
RlpBranchLinkExpected
RlpExtPathEncoding
RlpNonEmptyBlobExpected
Snap sync accounts healing (#1225) * Added inspect module why: Find dangling references for trie healing support. details: + This patch set provides only the inspect module and some unit tests. + There are also extensive unit tests which need bulk data from the `nimbus-eth1-blob` module. * Alternative pivot finder why: Attempt to be faster on start up. Also tying to decouple pivot finder somehow by providing different mechanisms (this one runs in `single` mode.) * Use inspect module for healing details: + After some progress with account and storage data, the inspect facility is used to find dangling links in the database to be filled nose-wise. + This is a crude attempt to cobble together functional elements. The set up needs to be honed. * fix scheduler to avoid starting dead peers why: Some peers drop out while in `sleepAsync()`. So extra `if` clauses make sure that this event is detected early. * Bug fixes causing crashes details: + prettify.toPC(): int/intToStr() numeric range over/underflow + hexary_inspect.hexaryInspectPath(): take care of half initialised step with branch but missing index into branch array * improve handling of dropped peers in alternaive pivot finder why: Strange things may happen while querying data from the network. Additional checks make sure that the state of other peers is updated immediately. * Update trace messages * reorganise snap fetch & store schedule
2022-09-16 07:24:12 +00:00
# interpolate
AccountRepairBlocked
InternalDbInconsistency
RightBoundaryProofFailed
Snap fetch account storage data (#1211) * Removed database write comparison statistics * Provide life storage tests data details: database dumps on external repo `nimbus-eth1`-blobs` * Update hexary tree interpolation for storage bulk tests * fetch storage update
2022-09-02 18:16:09 +00:00
RootNodeMismatch
RootNodeMissing
Snap sync accounts db code reorg (#1189) * Extracted functionality into sub-modules for maintainability * Setting SST bulk load as default in `accounts_db` details: + currently, the same data are stored via rocksdb if available, and the same via embedded `storage_type` with (non-standard) prefix 200 for time comparisons + fallback to normal `put()` unless rocksdb is accessible
2022-08-15 15:51:50 +00:00
# bulk storage
AddBulkItemFailed
CannotOpenRocksDbBulkSession
CommitBulkItemsFailed
NoRocksDbBackend
UnresolvedRepairNode
Snap fetch account storage data (#1211) * Removed database write comparison statistics * Provide life storage tests data details: database dumps on external repo `nimbus-eth1`-blobs` * Update hexary tree interpolation for storage bulk tests * fetch storage update
2022-09-02 18:16:09 +00:00
OSErrorException
Snap sync state save (#1302) * Piecemeal trie inspection details: Trie inspection will stop after maximum number of nodes visited. The inspection can be resumed using the returned state from the last session. why: This feature allows for task switch between `piecemeal` sessions. * Extract pivot helper code from `worker.nim` => `pivot_helper.nim` * Accounts import will now return dangling paths from `proof` nodes why: With proper bookkeeping, this can be used to start healing without analysing the the probably full trie. * Update `unprocessed` account range handling why: More generally, the API of a pairs of unprocessed intervals favours the first set and not before that is exhausted the second set comes into play. This was unfortunately implemented which caused the ranges to be unnecessarily fractioned. Now the number of range interval typically remains in the lower single digit numbers. * Save sync state after end of downloading some accounts details: restore/resume to be implemented later
2022-11-16 23:51:06 +00:00
StateRootNotFound
Snap sync accounts db code reorg (#1189) * Extracted functionality into sub-modules for maintainability * Setting SST bulk load as default in `accounts_db` details: + currently, the same data are stored via rocksdb if available, and the same via embedded `storage_type` with (non-standard) prefix 200 for time comparisons + fallback to normal `put()` unless rocksdb is accessible
2022-08-15 15:51:50 +00:00
# End