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Add QuerySplitTracer to records and rebuild splits
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| /* | ||
| * Copyright (c) Facebook, Inc. and its affiliates. | ||
| * | ||
| * Licensed 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. | ||
| */ | ||
|
|
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| #include "velox/exec/QuerySplitReader.h" | ||
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| #include <folly/hash/Checksum.h> | ||
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| #include "velox/common/file/FileInputStream.h" | ||
| #include "velox/connectors/hive/HiveConnectorSplit.h" | ||
| #include "velox/exec/QueryTraceTraits.h" | ||
| #include "velox/exec/QueryTraceUtil.h" | ||
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| using namespace facebook::velox::connector::hive; | ||
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| namespace facebook::velox::exec::trace { | ||
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| QuerySplitReader::QuerySplitReader( | ||
| std::string traceDir, | ||
| memory::MemoryPool* pool) | ||
| : traceDir_(std::move(traceDir)), | ||
| fs_(filesystems::getFileSystem(traceDir_, nullptr)), | ||
| pool_(pool), | ||
| splitInfoStream_(getSplitInputStream()) { | ||
| VELOX_CHECK_NOT_NULL(fs_); | ||
| VELOX_CHECK_NOT_NULL(splitInfoStream_); | ||
| } | ||
|
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| std::vector<exec::Split> QuerySplitReader::read() const { | ||
| const auto splitStrings = getSplitInfos(splitInfoStream_.get()); | ||
| std::vector<exec::Split> splits; | ||
| for (const auto& splitString : splitStrings) { | ||
| folly::dynamic splitInfoObj = folly::parseJson(splitString); | ||
| const auto split = | ||
| ISerializable::deserialize<HiveConnectorSplit>(splitInfoObj); | ||
| splits.emplace_back( | ||
| std::make_shared<HiveConnectorSplit>( | ||
| split->connectorId, | ||
| split->filePath, | ||
| split->fileFormat, | ||
| split->start, | ||
| split->length, | ||
| split->partitionKeys, | ||
| split->tableBucketNumber, | ||
| split->customSplitInfo, | ||
| split->extraFileInfo, | ||
| split->serdeParameters, | ||
| split->splitWeight, | ||
| split->infoColumns, | ||
| split->properties), | ||
| -1); | ||
| } | ||
| return splits; | ||
| } | ||
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| std::unique_ptr<common::FileInputStream> QuerySplitReader::getSplitInputStream() | ||
| const { | ||
| auto splitInfoFile = fs_->openFileForRead( | ||
| fmt::format("{}/{}", traceDir_, QueryTraceTraits::kSplitInfoFileName)); | ||
| // TODO: Make the buffer size configurable. | ||
| return std::make_unique<common::FileInputStream>( | ||
| std::move(splitInfoFile), 1 << 20, pool_); | ||
| } | ||
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| // static | ||
| std::vector<std::string> QuerySplitReader::getSplitInfos( | ||
| common::FileInputStream* stream) { | ||
| std::vector<std::string> splits; | ||
| try { | ||
| while (!stream->atEnd()) { | ||
| const auto length = stream->read<uint32_t>(); | ||
| std::string splitInfoString(length, '\0'); | ||
| stream->readBytes( | ||
| reinterpret_cast<uint8_t*>(splitInfoString.data()), length); | ||
| const auto crc32 = stream->read<uint32_t>(); | ||
| const auto actualCrc32 = folly::crc32( | ||
| reinterpret_cast<const uint8_t*>(splitInfoString.data()), | ||
| splitInfoString.size()); | ||
| if (crc32 != actualCrc32) { | ||
| LOG(ERROR) << "Fails to verify the checksum " << crc32 | ||
| << " does not equal to the actual checksum " << actualCrc32; | ||
| break; | ||
| } | ||
| splits.push_back(std::move(splitInfoString)); | ||
| } | ||
| } catch (const VeloxException& e) { | ||
| LOG(ERROR) << "Fails to deserialize split string from the stream for " | ||
| << e.message(); | ||
| } | ||
| return splits; | ||
| } | ||
| } // namespace facebook::velox::exec::trace |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,50 @@ | ||
| /* | ||
| * Copyright (c) Facebook, Inc. and its affiliates. | ||
| * | ||
| * Licensed 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. | ||
| */ | ||
|
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| #pragma once | ||
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| #include <re2/re2.h> | ||
| #include "velox/common/file/FileInputStream.h" | ||
| #include "velox/common/file/FileSystems.h" | ||
| #include "velox/exec/Split.h" | ||
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| namespace facebook::velox::exec::trace { | ||
| /// Used to load the input splits from a tracing 'TableScan' | ||
| /// operator, and for getting the traced splits when relaying 'TableScan'. | ||
| /// | ||
| /// Currently, it only works with 'HiveConnectorSplit'. In the future, it will | ||
| /// be extended to handle more types of splits, such as | ||
| /// 'IcebergHiveConnectorSplit'. | ||
| class QuerySplitReader { | ||
| public: | ||
| explicit QuerySplitReader(std::string traceDir, memory::MemoryPool* pool); | ||
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| /// Reads from 'splitInfoStream_' and deserializes to 'splitInfos'. Returns | ||
| /// all the correctly traced splits. | ||
| std::vector<exec::Split> read() const; | ||
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| private: | ||
| static std::vector<std::string> getSplitInfos( | ||
| common::FileInputStream* stream); | ||
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| std::unique_ptr<common::FileInputStream> getSplitInputStream() const; | ||
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| const std::string traceDir_; | ||
| const std::shared_ptr<filesystems::FileSystem> fs_; | ||
| memory::MemoryPool* const pool_; | ||
| const std::unique_ptr<common::FileInputStream> splitInfoStream_; | ||
| }; | ||
| } // namespace facebook::velox::exec::trace |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| /* | ||
| * Copyright (c) Facebook, Inc. and its affiliates. | ||
| * | ||
| * Licensed 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. | ||
| */ | ||
|
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| #include "velox/exec/QuerySplitWriter.h" | ||
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| #include <folly/hash/Checksum.h> | ||
| #include <folly/io/Cursor.h> | ||
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| #include "QueryTraceUtil.h" | ||
| #include "velox/connectors/hive/HiveConnectorSplit.h" | ||
| #include "velox/exec/QueryTraceTraits.h" | ||
|
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| using namespace facebook::velox::connector::hive; | ||
|
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| namespace facebook::velox::exec::trace { | ||
| /// Used to record and load the input splits from a tracing 'TableScan' | ||
| /// operator, and for getting the traced splits when relaying 'TableScan'. | ||
| /// | ||
| /// Currently, it only works with 'HiveConnectorSplit'. In the future, it will | ||
| /// be extended to handle more types of splits, such as | ||
| /// 'IcebergHiveConnectorSplit'. | ||
| QuerySplitWriter::QuerySplitWriter(std::string traceDir) | ||
| : traceDir_(std::move(traceDir)), | ||
| fs_(filesystems::getFileSystem(traceDir_, nullptr)) { | ||
| VELOX_CHECK_NOT_NULL(fs_); | ||
| splitInfoFile_ = fs_->openFileForWrite( | ||
| fmt::format("{}/{}", traceDir_, QueryTraceTraits::kSplitInfoFileName)); | ||
| VELOX_CHECK_NOT_NULL(splitInfoFile_); | ||
| } | ||
|
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| void QuerySplitWriter::write(const exec::Split& split) const { | ||
| VELOX_CHECK(!split.hasGroup(), "Do not support grouped execution"); | ||
| VELOX_CHECK(split.hasConnectorSplit()); | ||
| const auto splitObj = split.connectorSplit->serialize(); | ||
| const auto splitJson = folly::toJson(splitObj); | ||
| auto ioBuf = appendToBuffer(splitJson); | ||
| splitInfoFile_->append(std::move(ioBuf)); | ||
| } | ||
|
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| void QuerySplitWriter::finish() { | ||
| if (finished_) { | ||
| return; | ||
| } | ||
|
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| VELOX_CHECK_NOT_NULL( | ||
| splitInfoFile_, "The query data writer has already been finished"); | ||
| splitInfoFile_->close(); | ||
| splitInfoFile_.reset(); | ||
| finished_ = true; | ||
| } | ||
|
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| // static | ||
| std::unique_ptr<folly::IOBuf> QuerySplitWriter::appendToBuffer( | ||
| const std::string& split) { | ||
| const uint32_t length = split.length(); | ||
| const uint32_t crc32 = folly::crc32( | ||
| reinterpret_cast<const uint8_t*>(split.data()), split.size()); | ||
| auto ioBuf = | ||
| folly::IOBuf::create(sizeof(length) + split.size() + sizeof(crc32)); | ||
| folly::io::Appender appender(ioBuf.get(), 0); | ||
| appender.writeLE(length); | ||
| appender.push(reinterpret_cast<const uint8_t*>(split.data()), length); | ||
| appender.writeLE(crc32); | ||
| return ioBuf; | ||
| } | ||
| } // namespace facebook::velox::exec::trace |
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