Added utility to dump ledger state from buckets to JSON #3447
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… (optionally using `jq` for post-processing). The full ledger in this format currently takes ~19GB and is not really feasible for meaningful processing. Hence initially I introduce the following ways to reduce the output (all of which can be combined): - Filter expressions for conditionally selection the entries - Limit to only recently updated entries - Limit the output entry count For the sake of filtering I introduced XDR field extraction utility, that can be used for other dynamic operations on XDR, e.g. group-by and/or reduction. However, for now I'm keeping this minimalistic until some concrete use-cases that aren't feasible with the current approach appear. The current approach is a simple iteration over buckets from newer to older. This probably could be optimized (e.g. with parallel execution or XDR of intermediate results), but for now the performance seems acceptable: ~80s on my laptop for filtering the full ledger with a reasonably small output set.
MonsieurNicolas
approved these changes
Jun 20, 2022
|
r+ b7b8638 |
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Description
Added utility to dump ledger state from buckets to JSON for debugging (optionally using
jqfor post-processing).The full ledger in this format currently takes ~19GB and is not really feasible for meaningful processing. Hence initially I introduce the following ways to reduce the output (all of which can be combined):
For the sake of filtering I introduced XDR field extraction utility, that can be used for other dynamic operations on XDR, e.g. group-by and/or reduction. However, for now I'm keeping this minimalistic until some concrete use-cases that aren't feasible with the current approach appear.
The current approach is a simple iteration over buckets from newer to older. This probably could be optimized (e.g. with parallel execution or XDR of intermediate results), but for now the performance seems acceptable: ~80s on my laptop for filtering the full ledger with a reasonably small output set.
Checklist
clang-formatv8.0.0 (viamake formator the Visual Studio extension)