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Code Issues Releases Wiki Activity

ircd::db: Fix issues with cache queries.

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This commit is contained in:
Jason Volk 2019-01-11 17:36:05 -08:00
parent d3d5f03b8c
commit cbc4ddefe4
1 changed files with 16 additions and 4 deletions
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20
ircd/db.cc
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@ -9226,7 +9226,7 @@ ircd::db::seek(row &r,
{
r.size() > 1 &&
!test(opts, get::NO_PARALLEL) &&
!exists(cache(column), key)
!db::cached(column, key, opts)
};
#ifdef RB_DEBUG_DB_SEEK_ROW
@ -9986,6 +9986,7 @@ ircd::db::prefetch(column &column,
});
}
#if 0
bool
ircd::db::cached(column &column,
const string_view &key,
@ -9993,8 +9994,8 @@ ircd::db::cached(column &column,
{
return exists(cache(column), key);
}
#endif
#if 0
bool
ircd::db::cached(column &column,
const string_view &key,
@ -10004,6 +10005,14 @@ ircd::db::cached(column &column,
opts.read_tier = NON_BLOCKING;
opts.fill_cache = false;
database &d(column);
database::column &c(column);
// Theoretically this can be faster than a seek(), but it's not.
//thread_local std::string discard;
//if(!d.d->KeyMayExist(opts, c, slice(key), &discard, nullptr))
// return false;
std::unique_ptr<rocksdb::Iterator> it;
if(!seek(c, key, opts, it))
return false;
@ -10011,7 +10020,6 @@ ircd::db::cached(column &column,
assert(bool(it));
return valid_eq(*it, key);
}
#endif
bool
ircd::db::has(column &column,
@ -11140,7 +11148,11 @@ bool
ircd::db::exists(const rocksdb::Cache &cache_,
const string_view &key)
{
auto &cache(const_cast<rocksdb::Cache &>(cache_));
auto &cache
{
const_cast<rocksdb::Cache &>(cache_)
};
const custom_ptr<rocksdb::Cache::Handle> handle
{
cache.Lookup(slice(key)), [&cache](auto *const &handle)