Questions tagged [block-import]
The block-import tag has no usage guidance.
8
questions
3
votes
1
answer
71
views
What exactly is `indexed_body` and how to deal with it?
The IncomingBlock struct has a field called indexed_body, containing a Vec<Vec<u8>>. As far as I can tell this is sometimes sent with a block, although only when specifically requested. If ...
5
votes
2
answers
153
views
How does a parachain collator reliably know which parachain block (candidate recipt) got included on the relaychain to build the next block on?
I understand the entire path of a parachain block upto and including its candidateReciept being "included" on the relaychain, and its erasure coded PoVs being available with the relaychain ...
- 329
5
votes
1
answer
103
views
How to detect if a block is finalized already in block import
I have written a simple block import that wraps grandpa block import, it does tiny verification and calls grandpa block import after that, it looks like this:
pub struct CustomBlockImport<I> {
...
- 1,073
3
votes
1
answer
54
views
Is block creation guaranteed to be running after parent block is fully imported?
I observe an issue for a long time that I can't explain.
There is a value produced in BlockImport::import_block that must be included in inherents of n+1.
Though sometimes it seems like value is not ...
- 539
3
votes
1
answer
33
views
Do we need to implement the `Verifier` trait if we are providing our own implementation of `ImportQueue`?
Let's say I have a consensus engine called X. I know that most consensus engines import blocks through something with the trait ImportQueue, and BasicQueue is a popular choice for that. Consensus ...
- 3,722
1
vote
0
answers
218
views
Block Sync and manual import of blocks
I need to manually import some blocks, i.e. I am downloading some blocks using an external tool and want to make them pass whole verification pipeline and be included in substrate's db and visible to ...
- 11
0
votes
0
answers
86
views
Block import crashes on block where authorities have changed
We recently upgraded our chain from substrate V3 to polkadot-0.9.24. When we try to sync a node from 0, the block import fails on the first block where the authorities were changes (some block creator ...
- 153
10
votes
1
answer
81
views
How to properly split logic between block verifier and block import?
I found it a bit confusing that part of the logic for block verification is in sc_consensus::import_queue::Verifier::verify() implementation and another part is in sc_consensus::block_import::...
- 539