fix: keep option of database with precision ns

include/util/tdef.h

@@ -309,6 +309,7 @@ typedef enum ELogicConditionType {
 #define TSDB_DEFAULT_DURATION_PER_FILE  (10 * 1440)
 #define TSDB_MIN_KEEP                   (1 * 1440)       // data in db to be reserved. unit minute
 #define TSDB_MAX_KEEP                   (365000 * 1440)  // data in db to be reserved.
+#define TSDB_MAX_KEEP_NS                (29200 * 1440)  // data in db to be reserved.
 #define TSDB_DEFAULT_KEEP               (3650 * 1440)    // ten years
 #define TSDB_MIN_MINROWS_FBLOCK         10
 #define TSDB_MAX_MINROWS_FBLOCK         1000

source/libs/parser/src/parTranslater.c

@@ -3881,10 +3881,7 @@ static int32_t checkDbKeepOption(STranslateContext* pCxt, SDatabaseOptions* pOpt
 
   int64_t tsdbMaxKeep = TSDB_MAX_KEEP;
   if (pOptions->precision == TSDB_TIME_PRECISION_NANO) {
-    int64_t now = taosGetTimestampSec();
-    if (now < 0) now = 0;
-    tsdbMaxKeep = now / 60 + 292 * 365 * 1440;
-    tsdbMaxKeep = TMIN(tsdbMaxKeep, TSDB_MAX_KEEP);
+    tsdbMaxKeep = TSDB_MAX_KEEP_NS;
   }
 
   if (pOptions->keep[0] < TSDB_MIN_KEEP || pOptions->keep[1] < TSDB_MIN_KEEP || pOptions->keep[2] < TSDB_MIN_KEEP ||