英語 での Online deletion の使用例とその 日本語 への翻訳
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Programming
Online Deletion Behavior.
Configure Online Deletion.
Online deletion does not delete from the shard store.
The following settings relate to online deletion:.
Online deletion automatically stops if the server state becomes less than full.
You can control how much data you keep with online deletion;
If online deletion does not seem to be running after configuring it, try the following:.
The rippled server is already installed and online deletion is enabled.
When online deletion runs, it does not reduce the size of SQLite database files on disk;
For instructions on how to change the amount of history you keep,see Configure Online Deletion.
This change persists until you re-enable online deletion by calling can_delete again.
Online deletion does reduce the size of RocksDB or NuDB database files containing the ledger store.
The default config file schedules online deletion to happen automatically and periodically.
After online deletion runs, the complete_ledgers range reflects that older ledgers are no longer available.
For more information on controlling when online deletion happens, see Advisory Deletion. .
The online deletion settings configure how many ledger versions the rippled server should keep available in the ledger store at a time.
If you followed the installation instructions for a recommended platform, online deletion is enabled by default.
(Set it to 0 to run online deletion automatically as new ledger versions become available.).
The server may store up to just overtwice the configured number of ledger versions if online deletion is set to run automatically.
To temporarily disable online deletion, you can use the can_delete method with an argument of never.
These servers, which require significantly more disk space than other tracking servers, collect all available XRP Ledger history anddo not use online deletion.
The server attempts to start online deletion again after the next validated ledger version after becoming fully synced.
As your server accumulates history, the total number of ledgers available should slowly increase to twice the online_delete value you configured,then decrease when online deletion runs.
This can indicate that online deletion is being interrupted because your server fell out of sync with the network.
If configured to do so, the server also backfills ledger history up to a configured amount,which must be equal to or less than the cutoff beyond which online deletion is configured to delete.
The default config file sets online deletion to run automatically, but online deletion can also be configured to run only when prompted.
Online deletion is based on how many ledger versions to keep after deleting history, so you should have enough disk space to store twice as many ledgers as you set it to keep.
If you stop the server or it crashes while online deletion is running, online deletion resumes after the server is restarted and the server becomes fully synced.
The online deletion feature lets the rippled server delete the server's local copy of old ledger versions to keep disk usage from rapidly growing over time.
If online deletion and advisory deletion are both enabled, the server automatically backfills data up to the oldest ledger it has not been allowed to delete yet.