InsertEvent.java

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package org.apache.doris.datasource.hive.event;

import org.apache.doris.catalog.Env;
import org.apache.doris.common.DdlException;

import com.google.common.base.Preconditions;
import com.google.common.collect.Lists;
import org.apache.hadoop.hive.metastore.api.NotificationEvent;

import java.util.List;

/**
 * MetastoreEvent for INSERT event type
 */
public class InsertEvent extends MetastoreTableEvent {

    // for test
    public InsertEvent(long eventId, String catalogName, String dbName,
                       String tblName) {
        super(eventId, catalogName, dbName, tblName, MetastoreEventType.INSERT);
    }

    private InsertEvent(NotificationEvent event, String catalogName) {
        super(event, catalogName);
        Preconditions.checkArgument(getEventType().equals(MetastoreEventType.INSERT));
        Preconditions
                .checkNotNull(event.getMessage(), getMsgWithEventInfo("Event message is null"));
    }

    protected static List<MetastoreEvent> getEvents(NotificationEvent event, String catalogName) {
        return Lists.newArrayList(new InsertEvent(event, catalogName));
    }

    @Override
    protected boolean willCreateOrDropTable() {
        return false;
    }

    @Override
    protected boolean willChangeTableName() {
        return false;
    }

    @Override
    protected void process() throws MetastoreNotificationException {
        try {
            logInfo("catalogName:[{}],dbName:[{}],tableName:[{}]", catalogName, dbName, tblName);
            /**
             *  Only when we use hive client to execute a `INSERT INTO TBL SELECT * ...` or `INSERT INTO TBL ...` sql
             *  to a non-partitioned table then the hms will generate an insert event, and there is not
             *  any partition event occurs, but the file cache may has been changed, so we need handle this.
             *  Currently {@link org.apache.doris.catalog.RefreshManager#refreshTable()} do not invalidate
             *  the file cache of this table,
             *  but <a href="https://github.com/apache/doris/pull/17932">this PR</a> has fixed it.
             */
            Env.getCurrentEnv().getRefreshManager().refreshExternalTableFromEvent(catalogName, dbName, tblName,
                    eventTime);
        } catch (DdlException e) {
            throw new MetastoreNotificationException(
                    getMsgWithEventInfo("Failed to process event"), e);
        }
    }

    @Override
    protected boolean canBeBatched(MetastoreEvent that) {
        if (!isSameTable(that)) {
            return false;
        }

        /**
         * Because the cache of this table will be cleared when handling `InsertEvent`,
         * so `that` event can be batched if `that` event will not create or drop this table,
         * and `that` event must be a MetastoreTableEvent event otherwise `isSameTable` will return false
         */
        return !((MetastoreTableEvent) that).willCreateOrDropTable();
    }
}