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Copy pathsplit_source_connector.cpp
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88 lines (81 loc) · 3.56 KB
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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
#include "exec/scan/split_source_connector.h"
#include "runtime/exec_env.h"
#include "runtime/query_context.h"
namespace doris {
using apache::thrift::transport::TTransportException;
Status LocalSplitSourceConnector::get_next(bool* has_next, TFileRangeDesc* range) {
std::lock_guard<std::mutex> l(_range_lock);
*has_next = false;
if (_scan_index < _scan_ranges.size()) {
auto& ranges = _scan_ranges[_scan_index].scan_range.ext_scan_range.file_scan_range.ranges;
if (_range_index < ranges.size()) {
*has_next = true;
*range = ranges[_range_index++];
if (_range_index == ranges.size()) {
_scan_index++;
_range_index = 0;
}
}
}
return Status::OK();
}
Status RemoteSplitSourceConnector::get_next(bool* has_next, TFileRangeDesc* range) {
std::lock_guard<std::mutex> l(_range_lock);
*has_next = false;
if (_scan_index == _scan_ranges.size() && !_last_batch) {
SCOPED_TIMER(_get_split_timer);
Status coord_status;
// No need to set timeout because on FE side, there is a max fetch time
FrontendServiceConnection coord(_state->exec_env()->frontend_client_cache(),
_state->get_query_ctx()->coord_addr, &coord_status);
RETURN_IF_ERROR(coord_status);
TFetchSplitBatchRequest request;
request.__set_split_source_id(_split_source_id);
request.__set_max_num_splits(config::remote_split_source_batch_size);
TFetchSplitBatchResult result;
try {
coord->fetchSplitBatch(result, request);
if (result.__isset.status && result.status.status_code != TStatusCode::OK) {
return Status::IOError<false>("Failed to get batch of split source: {}",
result.status.error_msgs.empty()
? "unknown error"
: result.status.error_msgs[0]);
}
} catch (std::exception& e) {
return Status::IOError<false>("Failed to get batch of split source: {}", e.what());
}
_last_batch = result.splits.empty();
_merge_ranges<TScanRangeLocations>(_scan_ranges, result.splits);
_scan_index = 0;
_range_index = 0;
}
if (_scan_index < _scan_ranges.size()) {
auto& ranges = _scan_ranges[_scan_index].scan_range.ext_scan_range.file_scan_range.ranges;
if (_range_index < ranges.size()) {
*has_next = true;
*range = ranges[_range_index++];
if (_range_index == ranges.size()) {
_scan_index++;
_range_index = 0;
}
}
}
return Status::OK();
}
} // namespace doris