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Fix root dir for tendermint reindex event command #210

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merged 1 commit into from
Mar 14, 2024
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Describe your changes and provide context

Problem:
image

  • Tendermint command failed to parse the data directory correctly
  • home flag is not working properly

This PR add a default home dir and also force to parse the home flag for reindex event to replace the root dir, otherwise it will be empty.

Testing performed to validate your change

Tested locally for verification

@yzang2019 yzang2019 requested a review from philipsu522 March 13, 2024 07:40
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Codecov Report

Attention: Patch coverage is 33.33333% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 57.88%. Comparing base (3cc1293) to head (445bf26).

Additional details and impacted files

Impacted file tree graph

@@            Coverage Diff             @@
##             main     #210      +/-   ##
==========================================
- Coverage   57.92%   57.88%   -0.05%     
==========================================
  Files         249      249              
  Lines       33915    33918       +3     
==========================================
- Hits        19646    19634      -12     
- Misses      12697    12717      +20     
+ Partials     1572     1567       -5     
Files Coverage Δ
config/config.go 62.70% <100.00%> (+0.06%) ⬆️
cmd/tendermint/commands/reindex_event.go 75.87% <0.00%> (-0.78%) ⬇️

... and 15 files with indirect coverage changes

@yzang2019 yzang2019 merged commit 4269298 into main Mar 14, 2024
22 checks passed
udpatil pushed a commit that referenced this pull request Mar 27, 2024
* reformat logs to use simple concatenation with separators (#207)

* Use write-lock in (*TxPriorityQueue).ReapMax funcs (#209)

ReapMaxBytesMaxGas and ReapMaxTxs funcs in TxPriorityQueue claim
> Transactions returned are not removed from the mempool transaction
> store or indexes.

However, they use a priority queue to accomplish the claim
> Transaction are retrieved in priority order.

This is accomplished by popping all items out of the whole heap, and
then pushing then back in sequentially. A copy of the heap cannot be
obtained otherwise. Both of the mentioned functions use a read-lock
(RLock) when doing this. This results in a potential scenario where
multiple executions of the ReapMax can be started in parallel, and
both would be popping items out of the priority queue.

In practice, this can be abused by executing the `unconfirmed_txs` RPC
call repeatedly. Based on our observations, running it multiple times
per millisecond results in multiple threads picking it up at the same
time. Such a scenario can be obtained via the WebSocket interface, and
spamming `unconfirmed_txs` calls there. The behavior that happens is a
`Panic in WSJSONRPC handler` when a queue item unexpectedly disappears
for `mempool.(*TxPriorityQueue).Swap`.
(`runtime error: index out of range [0] with length 0`)

This can additionally lead to a `CONSENSUS FAILURE!!!` if the race
condition occurs for `internal/consensus.(*State).finalizeCommit`
when it tries to do `mempool.(*TxPriorityQueue).RemoveTx`, but
the ReapMax has already removed all elements from the underlying
heap. (`runtime error: index out of range [-1]`)

This commit switches the lock type to a write-lock (Lock) to ensure
no parallel modifications take place. This commit additionally updates
the tests to allow parallel execution of the func calls in testing,
as to prevent regressions (in case someone wants to downgrade the locks
without considering the implications from the underlying heap usage).

* Fix root dir for tendermint reindex command (#210)

* Replay events during restart to avoid tx missing (#211)

---------

Co-authored-by: Denys S <150304777+dssei@users.noreply.github.com>
Co-authored-by: Valters Jansons <sigv@users.noreply.github.com>
Co-authored-by: Yiming Zang <50607998+yzang2019@users.noreply.github.com>
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3 participants