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The node is ready to become partition owner when partition data is rebalanced and cache indexes are ready. For the message-based cluster rebalancing approach indexes are rebuilding simultaneously with cache data loading. For the file-based rebalancing approach, the index rebuild procedure must be finished before the partition state is set to the OWNING state. 

Public API changes

The following changes needs to be made:

/**
 * @return {@code True} if new type of direct connections supported.
 */
public default boolean channelConnectionSupported() {
    return false;
}
 
/**
 * @param remote Destination cluster node to communicate with.
 * @param msg Configuration channel message.
 * @throws IgniteSpiException If fails.
 */
public default IgniteSocketChannel channel(ClusterNode remote, T msg) throws IgniteSpiException {
    throw new UnsupportedOperationException();
}

Failover and Recovery

Apache Ignite doesn't provide any recovery guarantees for the partitions with the MOVING state. The cache partitions will be fully loaded when the next rebalance procedure occurs.

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