public static boolean needsRecalculation(long queryStartTime, long lastModifiedTime) {
    boolean needsRecalculate =
        (queryStartTime <= (lastModifiedTime + (SAFE_QUERY_TIME.get() - queryStartTime)));
    return ENABLE_UPDATE_IN_PROGRESS_INDEX_CALCULATION && needsRecalculate;
  }
Calculates whether we need to reevluate the key for the region entry We added a way to
determine whether to reevaluate an entry for query execution The method is to keep track of the
delta and current time in a single long value The value is then used by the query to determine
if a region entry needs to be reevaluated, based on subtracting the value with the query
execution time. This provides a delta + some false positive time (dts) If the dts + last
modified time of the region entry is > query start time, we can assume that it needs to be
reevaluated

This is to fix bug 47475, where references to region entries can be held by the executing query
either directly or indirectly (iterators can hold references for next) but the values
underneath could change.

Small amounts of false positives are ok as it will have a slight impact on performance
geode-core/src/main/java/org/apache/geode/cache/query/internal/index/IndexManager.java