JP2015072688A - Hadoopにおける強化されたSQLライクなクエリのためのバックグラウンドフォーマット最適化 - Google Patents
Hadoopにおける強化されたSQLライクなクエリのためのバックグラウンドフォーマット最適化 Download PDFInfo
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Abstract
【解決手段】環境100は、Hadoopクラスタを含む複数のデータノード120a〜120cを含む。またHadoopクラスタに接続及び/又はアクセスするためのAPI及びその他のツールを提供するクライアント104を含む。SQLアプリケーション102は、クエリ又はジョブの実行、HDFSの閲覧、及びワークフローの作成などのためのHadoop用のユーザインターフェイスを提供する。環境100は、クエリを発行するためのコマンドラインインターフェイス116も含む。低レイテンシクエリエンジンデーモン114a〜114cは、各データノード上で動作する。各低レイテンシクエリエンジンデーモン114a〜114cは、クライアント102/104を介して受け取られるクエリを受け取り設計し協調させることができる。
【選択図】図1
Description
Claims (19)
- 複数のデータノードからなる分散コンピューティングクラスタに記憶されたデータに対してクエリを実行するためのシステムであって、
各データノードのためのクエリエンジンを備え、該クエリエンジンは、
クライアントからのクエリを解析し、前記データノードにデータを記憶する際の1又はそれ以上のフォーマットを特定するスキーマに基づいて、対象フォーマットのデータが記憶されている場合には該対象フォーマットに合わせて生成され、前記対象フォーマットのデータが記憶されていない場合には別のフォーマットに合わせて生成されるクエリフラグメントを生成するためのクエリプランナと、
前記クエリフラグメントを前記複数のデータノード間で分散させるためのクエリコーディネータと、
クエリ実行エンジンと、
を有し、前記クエリ実行エンジンは、
前記スキーマに基づいて、前記データを、前記クエリフラグメントが生成されるフォーマットに転換する転換モジュールと、
前記転換されたデータに前記クエリフラグメントを実行し、集約されて前記クライアントに戻された中間結果を取得する実行モジュールと、
を備える、
ことを特徴とするシステム。 - 前記分散コンピューティングクラスタは、Hadoopクラスタである、
ことを特徴とする請求項1に記載のシステム。 - 前記対象フォーマットは、カラム型フォーマットである、
ことを特徴とする請求項1に記載のシステム。 - 前記対象フォーマットは、リレーショナルデータベースの処理に対して最適化される、
ことを特徴とする請求項1に記載のシステム。 - クエリを実行するためのデータ処理方法であって、
初期データをオリジナルフォーマットで記憶するステップと、
所定のスケジュールに従って、前記初期データを、リレーショナルデータベースの処理に対して最適化された対象フォーマットに変換するステップと、
前記変換されたデータを前記初期データと共に記憶するステップと、
を含むことを特徴とする方法。 - 前記変換されたデータが記憶された後に1又はそれ以上のクエリフラグメントの組を受け取るステップと、
前記受け取りに応答して、前記変換されたデータを転換するステップと、
前記転換されたデータに前記1又はそれ以上のクエリフラグメントの組を実行するステップと、
をさらに含むことを特徴とする請求項5に記載の方法。 - 前記所定のスケジュールは、定期的なものである、
ことを特徴とする請求項5に記載の方法。 - 前記所定のスケジュールは、受け取ったクエリフラグメントの組の数に基づく、
ことを特徴とする請求項6に記載の方法。 - 新たなデータを前記オリジナルフォーマットで記憶して前記初期データと置き換えるステップをさらに含み、
前記所定のスケジュールは、前記オリジナルフォーマットで記憶されたデータが置き換えられた回数に基づく、
ことを特徴とする請求項5に記載の方法。 - 前記対象フォーマットは、カラム型フォーマットである、
ことを特徴とする請求項5に記載の方法。 - スケジュールに従って、前記変換されたデータを削除するステップをさらに含む、
ことを特徴とする請求項5に記載の方法。 - 前記初期データ及び前記変換されたデータは、分散コンピューティングクラスタ内のデータノードに記憶され、
前記1又はそれ以上のクエリフラグメントの組は、前記データノード上で実行される、
ことを特徴とする請求項6に記載の方法。 - クエリを実行するためのデータ処理システムであって、
初期データをオリジナルフォーマットで記憶する第1の記憶ユニットと、
所定のスケジュールに従って、前記初期データを、リレーショナルデータベース処理に対して最適化された対象フォーマットに変換する変換ユニットと、
前記変換されたデータを記憶する第2の記憶ユニットと、
を備えることを特徴とするシステム。 - 前記変換されたデータが記憶された後に、1又はそれ以上のクエリフラグメントセットを受け取る受信ユニットと、
前記受け取りに応答して、前記変換されたデータを転換する転換ユニットと、
前記転換されたデータに前記1又はそれ以上のクエリフラグメントの組を実行する実行ユニットと、
をさらに備えることを特徴とする請求項13に記載のシステム。 - 前記対象フォーマットは、カラム型フォーマットである、
ことを特徴とする請求項13に記載のシステム。 - 前記システムは、分散コンピューティングクラスタ内のノードである、
ことを特徴とする請求項13に記載のシステム。 - 命令を記憶する機械可読記憶媒体であって、前記命令は、1又はそれ以上のプロセッサによる実行時に、
初期データをオリジナルフォーマットで記憶するステップと、
所定のスケジュールに従って、前記初期データを、リレーショナルデータベース処理に対して最適化された対象フォーマットに変換するステップと、
前記変換されたデータを記憶するステップと、
を含む方法を実行する、
ことを特徴とする機械可読記憶媒体。 - 前記方法は、
前記変換されたデータが記憶された後に、1又はそれ以上のクエリフラグメントの組を受け取るステップと、
前記受け取りに応答して、前記変換されたデータを転換するステップと、
前記転換されたデータに前記1又はそれ以上のクエリフラグメントの組を実行するステップと、
をさらに含むことを特徴とする請求項17に記載の機械可読記憶媒体。 - 前記対象フォーマットは、カラム型フォーマットである、
ことを特徴とする請求項17に記載の機械可読記憶媒体。
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Cited By (11)
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KR101699176B1 (ko) * | 2015-09-22 | 2017-01-23 | 전북대학교산학협력단 | Hdfs 데이터 암호화 및 복호화 방법 |
JP2019527441A (ja) * | 2016-09-21 | 2019-09-26 | 北京百度网▲訊▼科技有限公司Beijing Baidu Netcom Science And Technology Co.,Ltd. | 分散コンピューティングフレームワーク及び分散コンピューティング方法(distributed computing framework and distributed computing method) |
JP2021502655A (ja) * | 2017-11-30 | 2021-01-28 | 新華三大数据技術有限公司New H3C Big Data Technologies Co., Ltd. | データクエリ |
JP7018516B2 (ja) | 2017-11-30 | 2022-02-10 | 新華三大数据技術有限公司 | データクエリ |
US11269881B2 (en) | 2017-11-30 | 2022-03-08 | New H3C Big Data Technologies Co., Ltd. | Data query |
JP2021522570A (ja) * | 2018-04-19 | 2021-08-30 | リスク マネジメント ソリューションズ, インコーポレイテッド | 少ない待ち時間の検索問合せ応答を提供するためのデータ記憶システム |
JP7053885B2 (ja) | 2018-04-19 | 2022-04-12 | リスク マネジメント ソリューションズ, インコーポレイテッド | 少ない待ち時間の検索問合せ応答を提供するためのデータ記憶システム |
JP2022088603A (ja) * | 2018-04-19 | 2022-06-14 | リスク マネジメント ソリューションズ, インコーポレイテッド | 少ない待ち時間の検索問合せ応答を提供するためのデータ記憶システム |
CN112805705A (zh) * | 2018-10-19 | 2021-05-14 | 甲骨文国际公司 | 通用治理 |
JP2022505223A (ja) * | 2018-10-19 | 2022-01-14 | オラクル・インターナショナル・コーポレイション | ユニバーサルガバナンス |
JP7465869B2 (ja) | 2018-10-19 | 2024-04-11 | オラクル・インターナショナル・コーポレイション | ユニバーサルガバナンス |
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AU2014240211A1 (en) | 2015-04-16 |
US20150095308A1 (en) | 2015-04-02 |
US20200334247A1 (en) | 2020-10-22 |
CA2865451A1 (en) | 2015-04-01 |
US9477731B2 (en) | 2016-10-25 |
JP6113693B2 (ja) | 2017-04-12 |
US20200334248A1 (en) | 2020-10-22 |
EP2857995A2 (en) | 2015-04-08 |
US11630830B2 (en) | 2023-04-18 |
GB201417283D0 (en) | 2014-11-12 |
EP2857995A3 (en) | 2015-08-12 |
CA2865451C (en) | 2018-02-27 |
KR101719399B1 (ko) | 2017-03-23 |
GB2520411A (en) | 2015-05-20 |
AU2014240211B2 (en) | 2017-02-02 |
US10706059B2 (en) | 2020-07-07 |
US20170032003A1 (en) | 2017-02-02 |
EP3901781A1 (en) | 2021-10-27 |
KR20150039118A (ko) | 2015-04-09 |
US11567956B2 (en) | 2023-01-31 |
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