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ctdbd: Fix updating of hot keys in database statistics

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Signed-off-by: Amitay Isaacs <amitay@gmail.com>

(This used to be ctdb commit fde4b4db5a57f75c5efa5647c309f33e0d5a68f3)
This commit is contained in:
Amitay Isaacs 2013-07-12 17:33:13 +10:00
parent d8fc36781c
commit 054d8727ed
1 changed files with 13 additions and 7 deletions
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20
ctdb/server/ctdb_call.c
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@ -658,7 +658,7 @@ ctdb_defer_pinned_down_request(struct ctdb_context *ctdb, struct ctdb_db_context
static void
ctdb_update_db_stat_hot_keys(struct ctdb_db_context *ctdb_db, TDB_DATA key, int hopcount)
{
int i;
int i, id;
/* smallest value is always at index 0 */
if (hopcount <= ctdb_db->statistics.hot_keys[0].count) {
@ -681,16 +681,22 @@ ctdb_update_db_stat_hot_keys(struct ctdb_db_context *ctdb_db, TDB_DATA key, int
goto sort_keys;
}
if (ctdb_db->statistics.hot_keys[0].key.dptr != NULL) {
talloc_free(ctdb_db->statistics.hot_keys[0].key.dptr);
if (ctdb_db->statistics.num_hot_keys < MAX_HOT_KEYS) {
id = ctdb_db->statistics.num_hot_keys;
ctdb_db->statistics.num_hot_keys++;
} else {
id = 0;
}
ctdb_db->statistics.hot_keys[0].key.dsize = key.dsize;
ctdb_db->statistics.hot_keys[0].key.dptr = talloc_memdup(ctdb_db, key.dptr, key.dsize);
ctdb_db->statistics.hot_keys[0].count = hopcount;
if (ctdb_db->statistics.hot_keys[id].key.dptr != NULL) {
talloc_free(ctdb_db->statistics.hot_keys[id].key.dptr);
}
ctdb_db->statistics.hot_keys[id].key.dsize = key.dsize;
ctdb_db->statistics.hot_keys[id].key.dptr = talloc_memdup(ctdb_db, key.dptr, key.dsize);
ctdb_db->statistics.hot_keys[id].count = hopcount;
sort_keys:
for (i = 2; i < MAX_HOT_KEYS; i++) {
for (i = 1; i < MAX_HOT_KEYS; i++) {
if (ctdb_db->statistics.hot_keys[i].count < ctdb_db->statistics.hot_keys[0].count) {
hopcount = ctdb_db->statistics.hot_keys[i].count;
ctdb_db->statistics.hot_keys[i].count = ctdb_db->statistics.hot_keys[0].count;