JP2016504679A - イベント処理とマップリデュースとの統合 - Google Patents
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Abstract
Description
本願は、2012年12月5日に出願された、「イベント処理をマップリデュースと統合するための方法」(A METHOD FOR INTEGRATING EVENT PROCESSING WITH MAP REDUCE)と題された米国仮出願第61/733,844号の、米国特許法第119条(e)による優先権を主張し、その内容全体はあらゆる目的のためにここに引用により援用される。本願はまた、2013年3月29日に出願された、「イベント処理とマップリデュースとの統合」(INTEGRATING EVENT PROCESSING WITH MAP REDUCE)と題された米国仮出願第61/806,744号の、米国特許法第119条(e)による優先権を主張し、その内容全体はあらゆる目的のためにここに引用により援用される。本願はまた、2013年11月13日に出願された、「イベント処理とマップリデュースとの統合」(INTEGRATING EVENT PROCESSING WITH MAP-REDUCE)と題された米国非仮出願第14/079,538号の、米国特許法第119条(e)による優先権を主張し、その内容全体はあらゆる目的のためにここに引用により援用される。
連続イベントプロセッサは、イベントの連続ストリームを受信し、そこに含まれる各イベントを、そのイベントに連続イベント処理(continuous event processing:CEP)クエリを適用することによって処理することができる。そのようなCEPクエリは、構造化クエリ言語(structured query language:SQL)の延長である連続クエリ言語(continuous query language:CQL)などのCEPクエリ言語の構文に適合するようにフォーマット化され得る。SQLクエリは、リレーショナルデータベースのテーブルにすでに格納されたデータに(1つのユーザ要求につき)一度適用されることが多いが、CQLクエリは、入来するイベントストリームにおけるイベントが連続イベントプロセッサによって受信されると、それらのイベントに繰り返し適用される。
この発明の実施形態は、連続イベント処理の分野に関する。この発明の実施形態は、連続イベント処理とマップリデュース・アルゴリズミックツールとの組合せを使用して、大量のデータを比較的迅速に処理し、またはクエリするための手法を伴う。一実施形態では、連続イベントプロセッサは、(a)現在実行中のマップリデュース・ジョブが開始されてから受信されたイベントからのCQLクエリ結果を、(b)最も最近完了したマップリデュース・ジョブによって生成された最も最近のクエリ結果とマージすることにより、リアルタイムの結果を連続的に生成する。現在実行中のマップリデュース・ジョブが完了すると、そのクエリ結果は格納されて連続イベントプロセッサにアクセス可能となり、最後のマップリデュース・ジョブの実行以降にサイズが大きくなったイベントデータに関して、新規のマップリデュース・ジョブが開始される。マップリデュース・アルゴリズミックツールは、大量のデータを分析して処理するための便利な機構を提供する。そのような大量のデータは、「ビッグデータ」と呼ばれることもある。
上述のように、一実施形態では、連続クエリプロセッサは、イベントストリームに現在到着しているイベントに対してCQLクエリを連続的に処理することができ、一方、マップリデュース・プログラムは、以前にストリームから受信され、格納されたイベントを同時に処理する。大きいデータセットについて比較的新鮮な結果を生成するために、連続クエリプロセッサによって行なわれた処理の結果を、マップリデュース・プログラムによって行なわれた処理の結果と周期的にマージすることができる。
例示的なシナリオでは、ユーザは、1組のテキスト内のある特定の単語への言及の数量をカウントしたいかもしれない。Hadoopなどのマップリデュース・ツールは、特定の単語への言及の数量をカウントするために、1組のファイルにおける各ファイルを処理することができる。マップリデュース・ツールによって処理された1組のファイルは、数年前にイベントストリームから格納された短いテキストを含むかもしれない。たとえば、1組のファイルは、比較的最近の過去(たとえば、直近の1分)を除き、10年にわたってストリームから受信された短いテキストを含むかもしれない。これが生じている間、連続イベントプロセッサは、同様の短いリアルタイムテキストを、フェイスブック(Facebook:登録商標)またはツイッター(Twitter:登録商標)などのオンラインアプリケーションから受信できる。連続イベントプロセッサは、それらのリアルタイムテキストが生成された直後に(たとえば、ユーザがフェイスブックまたはツイッターを使用してそのようなテキストを投稿した直後に)、これらのリアルタイムテキスト内の特定の単語への言及の数量をカウントすることができる。マップリデュース・ツールによって計算されたカウントは、連続イベントプロセッサによって計算されたカウントと結合され得る。
制御はブロック604に戻る。
一般に、CQLには2つの異なる組の演算子がある。そのような1組の演算子はステートレスである。そのようなステートレス演算子では、典型的には、相互接続された演算子のグラフにおいて、1つの入力が1つ以上の出力にマップされる。この発明の一実施形態によれば、ステートレスCQL演算子は、バッチ処理ドメインにおけるマップ演算子に対応している。もう1つの組のCQL演算子はステートフルである。そのようなステートレス演算子では、典型的には、相互接続された演算子のグラフにおいて、複数の入力が1つの出力にマップされる。この発明の一実施形態によれば、ステートフルCQL演算子は、バッチ処理ドメインにおけるリデュース演算子に対応している。
この発明の一実施形態によれば、マージ演算子は、リアルタイムの連続処理結果と非リアルタイムのバッチ処理結果との間で重複が生成されないような態様で設計されている。マージ演算子は、リアルタイムの局面および非リアルタイムの局面双方による処理に起因してデータのあらゆる項目がそれ自体とマージされるのを防止する安全機能を含み得る。その結果、結合された結果の任意の特定の反復中、どの単一イベントも2回以上考慮されないであろう。この発明の一実施形態では、任意の特定の反復中、マージ演算子は、特定された時点(たとえば、1分前)よりも古い、非リアルタイムの(たとえば、マップリデュース)コンポーネントからの結果のみを受入れ、また、その特定された時点よりも古くない、リアルタイムの(たとえば、連続イベントプロセッサ)コンポーネントからの結果のみを受入れる。処理は繰り返し行なわれ得るため、時点は、反復が起こるたびに進み得る。
ピッグ・ラテン語は、マップリデュースによって使用され得る言語である。この発明の一実施形態では、CQLクエリのコンパイルは、ピッグ・ラテン語での類似演算子の生成を伴い得る。これらの類似演算子に基づいて、機能的に同等のピッグ・ラテン語プログラムが、連続クエリプロセッサによる使用のためのCQLクエリのコンパイルと同時に、コンパイラによって自動的に生成され得る。マップリデュース・ツールは、連続クエリプロセッサのCQLクエリの実行と同時に、ピッグ・ラテン語プログラムを実行できる。
図3は、この発明の一実施形態に従った、使用され得るシステム環境300のコンポーネントを示す簡略化されたブロック図である。図示されているように、システム環境300は1つ以上のクライアントコンピューティング装置302、304、306、308を含み、それらは、ウェブブラウザ、専用クライアント(オラクル・フォームズ(Oracle Forms))などのクライアントアプリケーションを動作させるように構成されている。さまざまな実施形態では、クライアントコンピューティング装置302、304、306および308は、サーバ312とやり取りしてもよい。
Claims (20)
- 第1の時間の時点で永続的データストアにすでに格納されているイベントデータに関して第1のクエリを実行する第1のバッチ演算を開始することと、
前記第1のバッチ演算の実行中、データストリームから連続的に受信されているイベントデータに関して第2のクエリを連続的に実行することと、
前記第1のバッチ演算の実行中、前記第2のクエリの結果を、完了した第2のバッチ演算の結果と連続的にマージすることと、
マージの結果を連続的に出力することと、
前記第1のバッチ演算の完了に応答して、前記第2のバッチ演算の結果を前記第1のバッチ演算の結果と置換することとを含む、コンピュータによって実現される方法。 - 前記第1のバッチ演算の実行中、前記永続的データストアに、前記データストリームから連続的に受信されている前記イベントデータを連続的に格納することと、
前記第1のバッチ演算の完了に応答して、前記第1の時間よりも遅い第2の時間の時点で前記永続的データストアにすでに格納されているイベントデータに関して前記第1のクエリを実行する第3のバッチ演算を開始することと、
前記第3のバッチ演算の実行中、データストリームから連続的に受信されているイベントデータに関して前記第2のクエリを連続的に実行することと、
前記第3のバッチ演算の実行中、前記第2のクエリの結果を、完了した前記第1のバッチ演算の結果と連続的にマージすることと、
前記第2のクエリと完了した前記第1のバッチ演算の結果とのマージの結果を連続的に出力することと、
前記第3のバッチ演算の完了に応答して、前記第1のバッチ演算の結果を前記第3のバッチ演算の結果と置換することとをさらに含む、請求項1に記載のコンピュータによって実現される方法。 - 前記第1のバッチ演算はマップリデュース演算であり、前記第2のクエリは前記第1のクエリと同じ演算を行なう、請求項1または2に記載のコンピュータによって実現される方法。
- 前記第2のクエリとして連続クエリ言語(CQL)クエリを受信することと、
前記CQLクエリに基づいて、前記CQLクエリの演算を行なうマップリデュース・プログラムを自動的に生成することとをさらに含む、請求項1〜3のいずれか1項に記載のコンピュータによって実現される方法。 - 前記第2のクエリとして連続クエリ言語(CQL)クエリを受信することと、
前記CQLクエリを自動的に構文解析することと、
構文解析に基づいて、前記CQLクエリを第1の組の演算子へと自動的に分離することと、
CQL演算子とピッグ・ラテン語演算子との間の特定されたマッピングに基づいて、第1の組のCQL演算子によって行なわれる演算子を行なう第2の組のピッグ・ラテン語演算子を自動的に生成することと、
前記ピッグ・ラテン語演算子に基づいて、前記第1のバッチ演算を行なうマップリデュース・プログラムを自動的に生成することとをさらに含む、請求項1〜4のいずれか1項に記載のコンピュータによって実現される方法。 - 前記第2のクエリとして連続クエリ言語(CQL)クエリを受信することと、
前記CQLクエリを自動的に構文解析することと、
構文解析に基づいて、前記CQLクエリを第1の組の演算子へと自動的に分離することと、
CQL演算子とピッグ・ラテン語演算子との間の特定されたマッピングに基づいて、第1の組のCQL演算子によって行なわれる演算子を行なう第2の組のピッグ・ラテン語演算子を自動的に生成することと、
前記第1の組からの演算子、前記第2の組からの演算子、前記第1の組からの演算子を表わすノードから前記第2の組からの演算子を表わすノードまでのエッジ、および前記第2の組からの演算子を表わすノードから前記第1の組からの演算子までのエッジを含む、ノードの有向グラフを自動的に生成することとをさらに含む、請求項1〜5のいずれか1項に記載のコンピュータによって実現される方法。 - 前記第2のクエリとして連続クエリ言語(CQL)クエリを受信することと、
前記CQLクエリを自動的に構文解析することと、
構文解析に基づいて、前記CQLクエリを第1の組の演算子へと自動的に分離することと、
CQL演算子とピッグ・ラテン語演算子との間の特定されたマッピングに基づいて、第1の組のCQL演算子によって行なわれる演算子を行なう第2の組のピッグ・ラテン語演算子を自動的に生成することと、
前記第1の組からの演算子、および前記第2の組からの演算子を含む、ノードの有向グラフを自動的に生成することと、
前記有向グラフにおける2つ以上のノードを、前記2つ以上のノードによって行なわれる演算間の類似点に基づいて自動的にマージすることとをさらに含む、請求項1〜6のいずれか1項に記載のコンピュータによって実現される方法。 - 1つ以上のプロセッサに演算子を行なわせる特定の命令を格納する、コンピュータ読取可能メモリであって、前記特定の命令は、
前記1つ以上のプロセッサに、第1の時間の時点で永続的データストアにすでに格納されているイベントデータに関して第1のクエリを実行する第1のバッチ演算を開始させる命令と、
前記1つ以上のプロセッサに、前記第1のバッチ演算の実行中、データストリームから連続的に受信されているイベントデータに関して第2のクエリを連続的に実行させる命令と、
前記1つ以上のプロセッサに、前記第1のバッチ演算の実行中、前記第2のクエリの結果を、完了した第2のバッチ演算の結果と連続的にマージさせる命令と、
前記1つ以上のプロセッサに、マージの結果を連続的に出力させる命令と、
前記1つ以上のプロセッサに、前記第1のバッチ演算の完了に応答して、前記第2のバッチ演算の結果を前記第1のバッチ演算の結果と置換させる命令とを含む、コンピュータ読取可能メモリ。 - 前記特定の命令は、
前記1つ以上のプロセッサに、前記第1のバッチ演算の実行中、前記永続的データストアに、前記データストリームから連続的に受信されている前記イベントデータを連続的に格納させる命令と、
前記1つ以上のプロセッサに、前記第1のバッチ演算の完了に応答して、前記第1の時間よりも遅い第2の時間の時点で前記永続的データストアにすでに格納されているイベントデータに関して前記第1のクエリを実行する第3のバッチ演算を開始させる命令と、
前記1つ以上のプロセッサに、前記第3のバッチ演算の実行中、データストリームから連続的に受信されているイベントデータに関して前記第2のクエリを連続的に実行させる命令と、
前記1つ以上のプロセッサに、前記第3のバッチ演算の実行中、前記第2のクエリの結果を、完了した前記第1のバッチ演算の結果と連続的にマージさせる命令と、
前記1つ以上のプロセッサに、前記第2のクエリと完了した前記第1のバッチ演算の結果とのマージの結果を連続的に出力させる命令と、
前記1つ以上のプロセッサに、前記第3のバッチ演算の完了に応答して、前記第1のバッチ演算の結果を前記第3のバッチ演算の結果と置換させる命令とをさらに含む、請求項8に記載のコンピュータ読取可能メモリ。 - 前記第1のバッチ演算はマップリデュース演算であり、前記第2のクエリは前記第1のクエリと同じ演算を行なう、請求項8または9に記載のコンピュータ読取可能メモリ。
- 前記特定の命令は、
前記1つ以上のプロセッサに、前記第2のクエリとして連続クエリ言語(CQL)クエリを受信させる命令と、
前記1つ以上のプロセッサに、前記CQLクエリに基づいて、前記CQLクエリの演算を行なうマップリデュース・プログラムを自動的に生成させる命令とをさらに含む、請求項8〜10のいずれか1項に記載のコンピュータ読取可能メモリ。 - 前記特定の命令は、
前記1つ以上のプロセッサに、前記第2のクエリとして連続クエリ言語(CQL)クエリを受信させる命令と、
前記1つ以上のプロセッサに、前記CQLクエリを自動的に構文解析させる命令と、
前記1つ以上のプロセッサに、構文解析に基づいて、前記CQLクエリを第1の組の演算子へと自動的に分離させる命令と、
前記1つ以上のプロセッサに、CQL演算子とピッグ・ラテン語演算子との間の特定されたマッピングに基づいて、第1の組のCQL演算子によって行なわれる演算子を行なう第2の組のピッグ・ラテン語演算子を自動的に生成させる命令と、
前記1つ以上のプロセッサに、前記ピッグ・ラテン語演算子に基づいて、前記第1のバッチ演算を行なうマップリデュース・プログラムを自動的に生成させる命令とをさらに含む、請求項8〜11のいずれか1項に記載のコンピュータ読取可能メモリ。 - 前記特定の命令は、
前記1つ以上のプロセッサに、前記第2のクエリとして連続クエリ言語(CQL)クエリを受信させる命令と、
前記1つ以上のプロセッサに、前記CQLクエリを自動的に構文解析させる命令と、
前記1つ以上のプロセッサに、構文解析に基づいて、前記CQLクエリを第1の組の演算子へと自動的に分離させる命令と、
前記1つ以上のプロセッサに、CQL演算子とピッグ・ラテン語演算子との間の特定されたマッピングに基づいて、第1の組のCQL演算子によって行なわれる演算子を行なう第2の組のピッグ・ラテン語演算子を自動的に生成させる命令と、
前記1つ以上のプロセッサに、前記第1の組からの演算子、前記第2の組からの演算子、前記第1の組からの演算子を表わすノードから前記第2の組からの演算子を表わすノードまでのエッジ、および前記第2の組からの演算子を表わすノードから前記第1の組からの演算子までのエッジを含む、ノードの有向グラフを自動的に生成させる命令とをさらに含む、請求項8〜12のいずれか1項に記載のコンピュータ読取可能メモリ。 - 前記特定の命令は、
前記1つ以上のプロセッサに、前記第2のクエリとして連続クエリ言語(CQL)クエリを受信させる命令と、
前記1つ以上のプロセッサに、前記CQLクエリを自動的に構文解析させる命令と、
前記1つ以上のプロセッサに、構文解析に基づいて、前記CQLクエリを第1の組の演算子へと自動的に分離させる命令と、
前記1つ以上のプロセッサに、CQL演算子とピッグ・ラテン語演算子との間の特定されたマッピングに基づいて、第1の組のCQL演算子によって行なわれる演算子を行なう第2の組のピッグ・ラテン語演算子を自動的に生成させる命令と、
前記1つ以上のプロセッサに、前記第1の組からの演算子、および前記第2の組からの演算子を含む、ノードの有向グラフを自動的に生成させる命令と、
前記1つ以上のプロセッサに、前記有向グラフにおける2つ以上のノードを、前記2つ以上のノードによって行なわれる演算間の類似点に基づいて自動的にマージさせる命令とをさらに含む、請求項8〜13のいずれか1項に記載のコンピュータ読取可能メモリ。 - システムであって、
1つ以上のプロセッサと、
前記1つ以上のプロセッサに演算子を行なわせる特定の命令を格納する、コンピュータ読取可能メモリとを含み、前記特定の命令は、
前記1つ以上のプロセッサに、第1の時間の時点で永続的データストアにすでに格納されているイベントデータに関して第1のクエリを実行する第1のバッチ演算を開始させる命令と、
前記1つ以上のプロセッサに、前記第1のバッチ演算の実行中、データストリームから連続的に受信されているイベントデータに関して第2のクエリを連続的に実行させる命令と、
前記1つ以上のプロセッサに、前記第1のバッチ演算の実行中、前記第2のクエリの結果を、完了した第2のバッチ演算の結果と連続的にマージさせる命令と、
前記1つ以上のプロセッサに、マージの結果を連続的に出力させる命令と、
前記1つ以上のプロセッサに、前記第1のバッチ演算の完了に応答して、前記第2のバッチ演算の結果を前記第1のバッチ演算の結果と置換させる命令とを含む、システム。 - 前記特定の命令は、
前記1つ以上のプロセッサに、前記第1のバッチ演算の実行中、前記永続的データストアに、前記データストリームから連続的に受信されている前記イベントデータを連続的に格納させる命令と、
前記1つ以上のプロセッサに、前記第1のバッチ演算の完了に応答して、前記第1の時間よりも遅い第2の時間の時点で前記永続的データストアにすでに格納されているイベントデータに関して前記第1のクエリを実行する第3のバッチ演算を開始させる命令と、
前記1つ以上のプロセッサに、前記第3のバッチ演算の実行中、データストリームから連続的に受信されているイベントデータに関して前記第2のクエリを連続的に実行させる命令と、
前記1つ以上のプロセッサに、前記第3のバッチ演算の実行中、前記第2のクエリの結果を、完了した前記第1のバッチ演算の結果と連続的にマージさせる命令と、
前記1つ以上のプロセッサに、前記第2のクエリと完了した前記第1のバッチ演算の結果とのマージの結果を連続的に出力させる命令と、
前記1つ以上のプロセッサに、前記第3のバッチ演算の完了に応答して、前記第1のバッチ演算の結果を前記第3のバッチ演算の結果と置換させる命令とをさらに含む、請求項15に記載のシステム。 - 前記第1のバッチ演算はマップリデュース演算であり、前記第2のクエリは前記第1のクエリと同じ演算を行なう、請求項15または16に記載のシステム。
- 前記特定の命令は、
前記1つ以上のプロセッサに、前記第2のクエリとして連続クエリ言語(CQL)クエリを受信させる命令と、
前記1つ以上のプロセッサに、前記CQLクエリに基づいて、前記CQLクエリの演算を行なうマップリデュース・プログラムを自動的に生成させる命令とをさらに含む、請求項15〜17のいずれか1項に記載のシステム。 - 前記特定の命令は、
前記1つ以上のプロセッサに、前記第2のクエリとして連続クエリ言語(CQL)クエリを受信させる命令と、
前記1つ以上のプロセッサに、前記CQLクエリを自動的に構文解析させる命令と、
前記1つ以上のプロセッサに、構文解析に基づいて、前記CQLクエリを第1の組の演算子へと自動的に分離させる命令と、
前記1つ以上のプロセッサに、CQL演算子とピッグ・ラテン語演算子との間の特定されたマッピングに基づいて、第1の組のCQL演算子によって行なわれる演算子を行なう第2の組のピッグ・ラテン語演算子を自動的に生成させる命令と、
前記1つ以上のプロセッサに、前記ピッグ・ラテン語演算子に基づいて、前記第1のバッチ演算を行なうマップリデュース・プログラムを自動的に生成させる命令とをさらに含む、請求項15〜18のいずれか1項に記載のシステム。 - 前記特定の命令は、
前記1つ以上のプロセッサに、前記第2のクエリとして連続クエリ言語(CQL)クエリを受信させる命令と、
前記1つ以上のプロセッサに、前記CQLクエリを自動的に構文解析させる命令と、
前記1つ以上のプロセッサに、構文解析に基づいて、前記CQLクエリを第1の組の演算子へと自動的に分離させる命令と、
前記1つ以上のプロセッサに、CQL演算子とピッグ・ラテン語演算子との間の特定されたマッピングに基づいて、第1の組のCQL演算子によって行なわれる演算子を行なう第2の組のピッグ・ラテン語演算子を自動的に生成させる命令と、
前記1つ以上のプロセッサに、前記第1の組からの演算子、前記第2の組からの演算子、前記第1の組からの演算子を表わすノードから前記第2の組からの演算子を表わすノードまでのエッジ、および前記第2の組からの演算子を表わすノードから前記第1の組からの演算子までのエッジを含む、ノードの有向グラフを自動的に生成させる命令とをさらに含む、請求項15〜19のいずれか1項に記載のシステム。
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EP2929467A1 (en) | 2015-10-14 |
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US20140156683A1 (en) | 2014-06-05 |
CN104838377B (zh) | 2019-11-26 |
JP6250061B2 (ja) | 2017-12-20 |
US10956422B2 (en) | 2021-03-23 |
WO2014089190A1 (en) | 2014-06-12 |
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