if (snapshotMetaData == null) {
// Snapshots are not running
return allocation.decision(Decision.YES, NAME, "no snapshots are currently running");
}
for (SnapshotMetaData.Entry snapshot : snapshotMetaData.entries()) {
SnapshotMetaData.ShardSnapshotStatus shardSnapshotStatus = snapshot.shards().get(shardRouting.shardId());
if (shardSnapshotStatus != null && !shardSnapshotStatus.state().completed() && shardSnapshotStatus.nodeId() != null && shardSnapshotStatus.nodeId().equals(shardRouting.currentNodeId())) {
logger.trace("Preventing snapshotted shard [{}] to be moved from node [{}]", shardRouting.shardId(), shardSnapshotStatus.nodeId());
return allocation.decision(Decision.NO, NAME, "snapshot for shard [%s] is currently running on node [%s]",
shardRouting.shardId(), shardSnapshotStatus.nodeId());