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34 lines
2.0 KiB
Markdown
34 lines
2.0 KiB
Markdown
# How to prepare Erigon release (things not to forget)
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## Update Jump dest optimisation code
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This step does not have to be completed during emergency updates, because failure to complete it has only a minor impact on the
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performance of the initial chain sync.
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In the source code `core/skip_analysis.go`, there is a constant `MainnetNotCheckedFrom` which should be equal to the block number,
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until which we have manually checked the usefulness of the Jump dest code bitmap. In order to update this, one needs to run these
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commands:
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````
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make state
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./build/bin/state checkChangeSets --datadir=<path to datadir> --block=<value of MainnetNotCheckedFrom>
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````
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If there are any transactions where code bitmap was useful, warning messages like this will be displayed:
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````
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WARN [08-01|14:54:27.778] Code Bitmap used for detecting invalid jump tx=0x86e55d1818b5355424975de9633a57c40789ca08552297b726333a9433949c92 block number=6426298
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````
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In such cases (unless there are too many instances), all block numbers need to be excluded in the `SkipAnalysis` function, and comment to it. The constant `MainnetNotCheckedFrom` needs to be updated to the first block number we have not checked. The value can be taken from the output of the `checkChangeSets`
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utility before it exits, like this:
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````
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INFO [08-01|15:36:04.282] Checked blocks=10573804 next time specify --block=10573804 duration=36m54.789025062s
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````
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## Update DB Schema version if required
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In the file `common/dbutils/bucket.go` there is variable `DBSchemaVersion` that needs to be updated if there are any changes in the database schema, leading to data migrations.
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In most cases, it is enough to bump minor version.
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## Update remote KV version if required
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In the file `ethdb/remote/remotedbserver/server.go` there is variable `KvServiceAPIVersion` that needs to be updated if there are any changes in the remote KV interface, or
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database schema, leading to data migrations.
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In most cases, it is enough to bump minor version. It is best to change both DB schema version and remove KV version together.
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