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Merge pull request #3609 from sfc-gh-jfu/jfu-fdbcli-storagecache 

Add cache_range command to fdbcli
This commit is contained in:
Meng Xu 2020-08-07 17:04:23 -07:00 committed by GitHub
parent 9a0a9acdd1 a707227092
commit 267cfbfe03
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 23 additions and 0 deletions
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23
fdbcli/fdbcli.actor.cpp
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@ -581,6 +581,11 @@ void initHelp() {
"view and control throttled tags",
"Use `on' and `off' to manually throttle or unthrottle tags. Use `enable auto' or `disable auto' to enable or disable automatic tag throttling. Use `list' to print the list of throttled tags.\n"
);
helpMap["cache_range"] = CommandHelp(
"cache_range <set|clear> <BEGINKEY> <ENDKEY>",
"Mark a key range to add to or remove from storage caches.",
"Use the storage caches to assist in balancing hot read shards. Set the appropriate ranges when experiencing heavy load, and clear them when they are no longer necessary."
);
helpMap["lock"] = CommandHelp(
"lock",
"lock the database with a randomly generated lockUID",
@ -4316,6 +4321,24 @@ ACTOR Future<int> cli(CLIOptions opt, LineNoise* plinenoise) {
}
continue;
}
if (tokencmp(tokens[0], "cache_range")) {
if (tokens.size() != 4) {
printUsage(tokens[0]);
is_error = true;
continue;
}
KeyRangeRef cacheRange(tokens[2], tokens[3]);
if (tokencmp(tokens[1], "set")) {
wait(makeInterruptable(addCachedRange(db, cacheRange)));
} else if (tokencmp(tokens[1], "clear")) {
wait(makeInterruptable(removeCachedRange(db, cacheRange)));
} else {
printUsage(tokens[0]);
is_error = true;
}
continue;
}
printf("ERROR: Unknown command `%s'. Try `help'?\n", formatStringRef(tokens[0]).c_str());
is_error = true;