Reset average ttl when empty databases (redis#8106)

ShooterIT · web-flow · commit c85bf2352d2a · 2020-11-30T23:15:14.000+02:00
On FLUSHDB or full sync, reset old average TTL stat.
This Stat is incrementally collected by the master over time when it searches for expired keys.
diff --git a/src/db.c b/src/db.c
@@ -416,6 +416,9 @@ long long emptyDbGeneric(redisDb *dbarray, int dbnum, int flags, void(callback)(
             dictEmpty(dbarray[j].dict,callback);
             dictEmpty(dbarray[j].expires,callback);
         }
+        /* Because we will start a new database, reset average ttl. */
+        dbarray[j].avg_ttl = 0;
+        dbarray[j].expires_cursor = 0;
     }
 
     /* Post-flush actions */

Original file line number	Diff line number	Diff line change
`@@ -416,6 +416,9 @@ long long emptyDbGeneric(redisDb *dbarray, int dbnum, int flags, void(callback)(`
`416`	`416`	`dictEmpty(dbarray[j].dict,callback);`
`417`	`417`	`dictEmpty(dbarray[j].expires,callback);`
`418`	`418`	`}`
	`419`	`+ /* Because we will start a new database, reset average ttl. */`
	`420`	`+ dbarray[j].avg_ttl = 0;`
	`421`	`+ dbarray[j].expires_cursor = 0;`
`419`	`422`	`}`
`420`	`423`
`421`	`424`	`/* Post-flush actions */`