public QueryStatus getQueryStatus(QueryId queryId) throws ServiceException {
GetQueryStatusRequest.Builder builder = GetQueryStatusRequest.newBuilder();
builder.setQueryId(queryId.getProto());
GetQueryStatusResponse res = null;
if (queryMasterMap.containsKey(queryId)) {
NettyClientBase qmClient = null;
try {
qmClient =
connPool.getConnection(
queryMasterMap.get(queryId), QueryMasterClientProtocol.class, false);
QueryMasterClientProtocolService.BlockingInterface queryMasterService = qmClient.getStub();
res = queryMasterService.getQueryStatus(null, builder.build());
} catch (Exception e) {
throw new ServiceException(e.getMessage(), e);
} finally {
connPool.releaseConnection(qmClient);
}
} else {
NettyClientBase tmClient = null;
try {
tmClient = connPool.getConnection(tajoMasterAddr, TajoMasterClientProtocol.class, false);
TajoMasterClientProtocolService.BlockingInterface tajoMasterService = tmClient.getStub();
res = tajoMasterService.getQueryStatus(null, builder.build());
String queryMasterHost = res.getQueryMasterHost();
if (queryMasterHost != null && !queryMasterHost.isEmpty()) {
NettyClientBase qmClient = null;
try {
InetSocketAddress qmAddr =
NetUtils.createSocketAddr(queryMasterHost, res.getQueryMasterPort());
qmClient = connPool.getConnection(qmAddr, QueryMasterClientProtocol.class, false);
QueryMasterClientProtocolService.BlockingInterface queryMasterService =
qmClient.getStub();
res = queryMasterService.getQueryStatus(null, builder.build());
queryMasterMap.put(queryId, qmAddr);
} catch (Exception e) {
throw new ServiceException(e.getMessage(), e);
} finally {
connPool.releaseConnection(qmClient);
}
}
} catch (Exception e) {
throw new ServiceException(e.getMessage(), e);
} finally {
connPool.releaseConnection(tmClient);
}
}
return new QueryStatus(res);
}
/**
* It submits a query statement and get a response. The main difference from {@link
* #executeQuery(String)} is a blocking method. So, this method is wait for the finish of the
* submitted query.
*
* @return If failed, return null.
*/
public ResultSet executeQueryAndGetResult(final String sql) throws ServiceException, IOException {
GetQueryStatusResponse response =
new ServerCallable<GetQueryStatusResponse>(
connPool, tajoMasterAddr, TajoMasterClientProtocol.class, false, true) {
public GetQueryStatusResponse call(NettyClientBase client) throws ServiceException {
final QueryRequest.Builder builder = QueryRequest.newBuilder();
builder.setQuery(sql);
TajoMasterClientProtocolService.BlockingInterface tajoMasterService = client.getStub();
return tajoMasterService.submitQuery(null, builder.build());
}
}.withRetries();
QueryId queryId = new QueryId(response.getQueryId());
if (queryId.equals(QueryIdFactory.NULL_QUERY_ID)) {
return this.createNullResultSet(queryId);
} else {
return this.getQueryResultAndWait(queryId);
}
}