Examples with MapDifference org.apache.drill.shaded.guava.com.google.common.collect.MapDifference used on opensource projects

Example 1 with MapDifference

use of org.apache.drill.shaded.guava.com.google.common.collect.MapDifference in project drill by apache.

the class IcebergMetastore method updateTableProperties.

/**
 * Checks config table properties against current table properties.
 * Adds properties that are absent, updates existing and removes absent.
 * If properties are the same, does nothing.
 *
 * @param table Iceberg table instance
 * @param tableProperties table properties from the config
 */
private void updateTableProperties(Table table, Map<String, String> tableProperties) {
    Map<String, String> currentProperties = table.properties();
    MapDifference<String, String> difference = Maps.difference(tableProperties, currentProperties);
    if (difference.areEqual()) {
        return;
    }
    UpdateProperties updateProperties = table.updateProperties();
    // collect properties that are different
    Map<String, String> propertiesToUpdate = difference.entriesDiffering().entrySet().stream().collect(Collectors.toMap(Map.Entry::getKey, entry -> entry.getValue().leftValue(), (o, n) -> n));
    // add new properties
    propertiesToUpdate.putAll(difference.entriesOnlyOnLeft());
    logger.debug("Updating Iceberg table [{}] properties: {}", table.location(), updateProperties);
    propertiesToUpdate.forEach(updateProperties::set);
    logger.debug("Removing Iceberg table [{}] properties: {}", table.location(), difference.entriesOnlyOnRight());
    difference.entriesOnlyOnRight().keySet().forEach(updateProperties::remove);
    updateProperties.commit();
}