[improvement](fe) Add reason log when Env is not ready (#28286)

fe/fe-common/src/main/java/org/apache/doris/common/Config.java

@@ -244,12 +244,12 @@ public class Config extends ConfigBase {
             "The desired upper limit on the number of bytes of reserved space to retain "
                     + "in a replicated JE Environment. "
                     + "This parameter is ignored in a non-replicated JE Environment."})
-    public static int bdbje_reserved_disk_bytes = 1 * 1024 * 1024 * 1024; // 1G
+    public static long bdbje_reserved_disk_bytes = 1 * 1024 * 1024 * 1024; // 1G
 
     @ConfField(description = {"BDBJE 所需的空闲磁盘空间大小。如果空闲磁盘空间小于这个值，则BDBJE将无法写入。",
             "Amount of free disk space required by BDBJE. "
                     + "If the free disk space is less than this value, BDBJE will not be able to write."})
-    public static int bdbje_free_disk_bytes = 1 * 1024 * 1024 * 1024; // 1G
+    public static long bdbje_free_disk_bytes = 1 * 1024 * 1024 * 1024; // 1G
 
     @ConfField(masterOnly = true, description = {"心跳线程池的线程数",
             "Num of thread to handle heartbeat events"})