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fix: revise HIP response code and mirror node consideration #1267

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Merged
mgarbs merged 4 commits into from
Sep 17, 2025
Merged

fix: revise HIP response code and mirror node consideration #1267

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948b06c
fix: revise HIP response code and mirror node consideration
lukelee-sl Aug 18, 2025
128945b
fix tense
lukelee-sl Aug 18, 2025
eea7205
address pr comments
lukelee-sl Aug 20, 2025
5f092b4
Merge branch 'main' into hip-1249-update
mgarbs Sep 17, 2025
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13 changes: 9 additions & 4 deletions HIP/hip-1249.md
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,7 @@ created: 2025-06-30
last-call-date-time: 2025-08-13T07:00:00Z
discussions-to: https://github.com/hiero-ledger/hiero-improvement-proposals/pull/1249
replaces: 185
updated: 2025-08-04
updated: 2025-08-18
---

# Abstract
Expand Down Expand Up @@ -88,7 +88,7 @@ Under this proposal:
- Each transaction specifies a gas limit (must not exceed network maximum).
- At execution:
- Ops units are deducted from the throttle bucket based on executed opcodes.
- If the bucket is exhausted, remaining transactions fail with THROTTLED_AT_CONSENSUS and incur only the intrinsic
- If the bucket is exhausted, remaining transactions fail with CONSENSUS_GAS_EXHAUSTED and incur only the intrinsic
gas fee (covering network costs).

This maintains the current behavior where over-submitted transactions may fail and incur fees, but improves overall
Expand Down Expand Up @@ -153,6 +153,10 @@ operations not covered by other throttles.

If a precompile/system call exhausts ops mid-transaction, handle as in Execution Outcomes.

## Mirror Node Considerations
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The mirror node computed a value called `gasConsumed` in order to provide a more accurate representation of gas used by
the evm. As the `gasUsed` value will accurately reflect the gas used by the evm, the `gasConsumed` value will be deprecated.
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# Backwards Compatibility

This change is backward-compatible for developers:
Expand Down Expand Up @@ -189,8 +193,9 @@ Educate developers on key changes:

1. **Simplified Billing**: No more 80% minimum charge—pay only for gas used. This reduces costs for overestimated limits
and eases gas estimation.
2. **Throttle Failures**: Transactions may still fail due to exhausted ops/sec (error: THROTTLED_AT_CONSENSUS), even if
valid. Advise retry logic and monitoring network load.
2. **Throttle Failures**: A transaction may overfill the ops per second throttle up to a 15M gas per transaction limit.
Subsequent transactions will fail (error: CONSENSUS_GAS_EXHAUSTED) until enough time passes to refill the throttle capacity,
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even if valid. Advise retry logic and monitoring network load.
3. **Performance Gains**: Highlight potential for faster, higher-throughput applications without code changes.
4. **Precompile/System Call Costs**: Explain that these now factor into throttling for better performance limits.
Developers using HTS or crypto functions should note potential failures if ops exhaust, but no code changes
Expand Down
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