Reject NaN disk space warning threshold on hot reload (#18326)

Author: CRZbulabula

iotdb-core/node-commons/src/main/java/org/apache/iotdb/commons/conf/CommonDescriptor.java

@@ -597,7 +597,9 @@ public double loadHotModifiedDiskSpaceWarningThreshold(final TrimProperties prop
             properties.getProperty(
                 "disk_space_warning_threshold",
                 String.valueOf(config.getDiskSpaceWarningThreshold())));
-    if (diskSpaceWarningThreshold < 0 || diskSpaceWarningThreshold >= 1) {
+    if (!Double.isFinite(diskSpaceWarningThreshold)
+        || diskSpaceWarningThreshold < 0
+        || diskSpaceWarningThreshold >= 1) {
       throw new IOException(
           CommonMessages.EXCEPTION_DISK_SPACE_WARNING_THRESHOLD_MUST_BE_IN_0_1_BUT_WAS_7B345766
               + diskSpaceWarningThreshold

iotdb-core/node-commons/src/test/java/org/apache/iotdb/commons/conf/CommonDescriptorDiskSpaceWarningThresholdTest.java

@@ -62,7 +62,7 @@ public void outOfRangeValueIsRejectedWithoutMutatingConfig() {
     final CommonDescriptor descriptor = CommonDescriptor.getInstance();
     final double original = descriptor.getConfig().getDiskSpaceWarningThreshold();
     try {
-      for (final String badValue : new String[] {"1.0", "1.5", "-0.1"}) {
+      for (final String badValue : new String[] {"NaN", "1.0", "1.5", "-0.1"}) {
         final TrimProperties properties = new TrimProperties();
         properties.setProperty(KEY, badValue);
         Assert.assertThrows(