/**
* Connect to peer and check the table descriptor on peer:
*
* <ol>
* <li>Create the same table on peer when not exist.
* <li>Throw exception if the table exists on peer cluster but descriptors are not same.
* </ol>
*
* @param tableName name of the table to sync to the peer
* @param splits table split keys
* @throws IOException
*/
private void checkAndSyncTableDescToPeers(final TableName tableName, final byte[][] splits)
throws IOException {
List<ReplicationPeer> repPeers = listValidReplicationPeers();
if (repPeers == null || repPeers.size() <= 0) {
throw new IllegalArgumentException("Found no peer cluster for replication.");
}
for (ReplicationPeer repPeer : repPeers) {
Configuration peerConf = repPeer.getConfiguration();
HTableDescriptor htd = null;
try (Connection conn = ConnectionFactory.createConnection(peerConf);
Admin admin = this.connection.getAdmin();
Admin repHBaseAdmin = conn.getAdmin()) {
htd = admin.getTableDescriptor(tableName);
HTableDescriptor peerHtd = null;
if (!repHBaseAdmin.tableExists(tableName)) {
repHBaseAdmin.createTable(htd, splits);
} else {
peerHtd = repHBaseAdmin.getTableDescriptor(tableName);
if (peerHtd == null) {
throw new IllegalArgumentException(
"Failed to get table descriptor for table "
+ tableName.getNameAsString()
+ " from peer cluster "
+ repPeer.getId());
} else if (!peerHtd.equals(htd)) {
throw new IllegalArgumentException(
"Table "
+ tableName.getNameAsString()
+ " exists in peer cluster "
+ repPeer.getId()
+ ", but the table descriptors are not same when comapred with source cluster."
+ " Thus can not enable the table's replication switch.");
}
}
}
}
}
