JP6452629B2 - 連続イベント処理(cep)クエリの並列の実行 - Google Patents
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Description
本出願は、連続イベント処理(CEP:continuous event processing)クエリの処理に関する。
発明のある実施形態は、複数の実行のスレッドが、CEPクエリのオペレーションの少なくとも一部を互いに同時に行なうことができるように、CEPクエリをいつどのように同時に処理できるか判定するための技術に関する。ある技術に従うと、ユーザは、CEPクエリプロセッサに、CEPクエリを同時に実行する試行を行なうように命令し得る。CEPクエリプロセッサはこれに応じて、CEPクエリの実行またはその一部が同時に行なわれ得るかどうか、継承およびオペレーションタイプに依存し得るある制約に基づいて判定する。この判定に基づいて、CEPクエリプロセッサは、イベントストリーム内の同一イベントに対してCEPクエリの少なくともある部分を並列に実行し得る。
以下の説明では、説明の目的のために、本発明の実施形態が完全に理解されるように特定の詳細が記載される。しかしながら、本発明はこれらの特定の詳細なしに実施され得ることが明らかであろう。
Claims (15)
- イベントのデータストリームを処理するためのシステムであって、前記システムは、
複数の命令を格納するメモリと、
前記メモリに結合されたプロセッサとを備え、前記プロセッサは、
連続イベント処理(CEP)クエリを複数の別個の演算子に分割し、
前記複数の別個の演算子内の各特定の演算子について別個の順序付け制約を判定し、
前記プロセッサが前記複数の別個の演算子について判定した前記順序付け制約に少なくとも部分的に基づいて、前記CEPクエリについての順序付け制約を判定し、
前記CEPクエリについての前記順序付け制約に基づいて、前記CEPクエリの複数のオペレーションが同時に実行可能であるかどうかを判定し、
前記CEPクエリの複数のオペレーションが同時に実行可能であると判定したことに応じて、イベントストリームにおける特定のイベントに対して前記CEPクエリの前記複数のオペレーションを同時に処理する複数の実行のスレッドを生成するように、前記複数の命令を実行するように構成されており、
前記複数の実行のスレッドの各々は、同時に、前記特定のイベントに対して前記複数のオペレーションのうちの1のオペレーションを実行する、システム。 - 前記プロセッサは、前記イベントストリームと関連付けられる順序付け制約に少なくとも部分的に基づいて、前記CEPクエリについての前記順序付け制約を判定するように構成されている、請求項1に記載のシステム。
- 前記プロセッサは、前記特定の演算子がそれから入力を受ける1つ以上の他の演算子の1つ以上の順序付け制約に少なくとも部分的に基づいて前記特定の演算子についての順序付け制約を判定することによって、少なくとも部分的に、前記複数の別個の演算子内の各特定の演算子について前記別個の順序付け制約を判定するように構成されている、請求項1または2に記載のシステム。
- 前記プロセッサは、前記特定の演算子のオペレーションタイプがフィルタリングオペレーションタイプであるかどうかに少なくとも部分的に基づいて前記特定の演算子についての順序付け制約を判定することによって、少なくとも部分的に、前記複数の別個の演算子内の各特定の演算子について前記別個の順序付け制約を判定するように構成されている、請求項1〜3のいずれか1項に記載のシステム。
- 前記プロセッサは、(a)前記特定の演算子がそれらから入力を受けるすべての他の演算子の順序付け制約、および(b)前記特定の演算子のオペレーションタイプと関連付けられる順序付け制約を含む順序付け制約のセット内のうち、最も制約された順序付け制約を判定することによって前記特定の演算子についての順序付け制約を判定することによって、少なくとも部分的に、前記複数の別個の演算子内の各特定の演算子について前記別個の順序付け制約を判定するように構成されている、請求項1〜4のいずれか1項に記載のシステム。
- 前記プロセッサは、(a)前記イベントストリームにおけるイベントを処理する第1のCEPクエリによって用いられる第1の演算子と、(b)前記イベントストリームにおけるイベントを同様に処理する第2のCEPクエリによって用いられる第2の演算子とを、前記第1の演算子および前記第2の演算子の両方が特定のタイプのオペレーションを行なうと判定したことに応じて、単一の共有演算子にマージするように構成されている、請求項1〜5のいずれか1項に記載のシステム。
- 前記プロセッサは、(a)前記イベントストリームにおけるイベントを処理する第1のCEPクエリによって用いられる第1の演算子と、(b)前記イベントストリームにおけるイベントを同様に処理する第2のCEPクエリによって用いられる第2の演算子とを、前記第1の演算子および前記第2の演算子の両方が特定のタイプのオペレーションを行なうと判定したことに応じて、単一の共有演算子にマージするように構成され、
前記プロセッサは、前記共有演算子の順序付け制約に少なくとも部分的に基づいて、前記共有演算子から入力を受ける第3の演算子についての順序付け制約を判定するように構成され、
前記プロセッサは、前記共有演算子の前記順序付け制約に少なくとも部分的に基づいて、前記共有演算子から入力を受ける第4の演算子についての順序付け制約を判定するように構成され、
前記第3の演算子は、前記第1のCEPクエリによって用いられ、前記第2のCEPクエリによっては用いられず、
前記第4の演算子は、前記第2のCEPクエリによって用いられ、前記第1のCEPクエリによっては用いられない、請求項1〜5のいずれか1項に記載のシステム。 - イベントのデータストリームを処理するための方法であって、前記方法は、
連続イベント処理(CEP)クエリを複数の別個の演算子に分割するステップと、
前記複数の別個の演算子内の各特定の演算子について別個の順序付け制約を判定するステップと、
プロセッサが、前記複数の別個の演算子について判定した前記順序付け制約に少なくとも部分的に基づいて、前記CEPクエリについての順序付け制約を判定するステップと、
前記CEPクエリについての前記順序付け制約に基づいて、前記CEPクエリの複数のオペレーションが同時に実行可能であるかどうかを判定するステップと、
前記CEPクエリの複数のオペレーションが同時に実行可能であると判定したことに応じて、イベントストリームにおける特定のイベントに対して前記CEPクエリの前記複数のオペレーションを同時に処理する複数の実行のスレッドを生成するステップとを備え、
前記複数の実行のスレッドの各々は、同時に、前記特定のイベントに対して前記複数のオペレーションのうちの1のオペレーションを実行する、方法。 - 前記イベントストリームと関連付けられる順序付け制約に少なくとも部分的に基づいて、前記CEPクエリについての順序付け制約を判定するステップをさらに含む、請求項8に記載の方法。
- 前記複数の別個の演算子内の各特定の演算子について別個の順序付け制約を判定するステップは、前記特定の演算子がそれから入力を受ける1つ以上の他の演算子の1つ以上の
順序付け制約に少なくとも部分的に基づいて、前記特定の演算子についての順序付け制約を判定するステップを含む、請求項8または9に記載の方法。 - 前記複数の別個の演算子内の各特定の演算子について別個の順序付け制約を判定するステップは、前記特定の演算子のオペレーションタイプがフィルタリングオペレーションタイプであるかどうかに少なくとも部分的に基づいて、前記特定の演算子についての順序付け制約を判定するステップを含む、請求項8〜10のいずれか1項に記載の方法。
- (a)前記イベントストリームにおけるイベントを処理する第1のCEPクエリによって用いられる第1の演算子と、(b)前記イベントストリームにおけるイベントを同様に処理する第2のCEPクエリによって用いられる第2の演算子とを、前記第1の演算子および前記第2の演算子の両方が特定のタイプのオペレーションを行なうと判定したことに応じて、単一の共有演算子にマージさせるステップをさらに含む、請求項8〜11のいずれか1項に記載の方法。
- (a)前記イベントストリームにおけるイベントを処理する第1のCEPクエリによって用いられる第1の演算子と、(b)前記イベントストリームにおけるイベントを同様に処理する第2のCEPクエリによって用いられる第2の演算子とを、前記第1の演算子および前記第2の演算子の両方が特定のタイプのオペレーションを行なうと判定したことに応じて、単一の共有演算子にマージするステップをさらに含み、
前記複数の別個の演算子内の各特定の演算子について別個の順序付け制約を判定するステップは、前記共有演算子の順序付け制約に少なくとも部分的に基づいて、前記共有演算子から入力を受ける第3の演算子についての順序付け制約を判定するステップを含み、
前記複数の別個の演算子内の各特定の演算子について別個の順序付け制約を判定するステップは、前記共有演算子の前記順序付け制約に少なくとも部分的に基づいて、前記共有演算子から入力を受ける第4の演算子についての順序付け制約を判定するステップを含み、
前記第3の演算子は、前記第1のCEPクエリによって用いられ、前記第2のCEPクエリによっては用いられず、
前記第4の演算子は、前記第2のCEPクエリによって用いられ、前記第1のCEPクエリによっては用いられない、請求項8〜11のいずれか1項に記載の方法。 - プロセッサにオペレーションを行なわせるための複数の命令を含むコンピュータ読取可能プログラムであって、前記複数の命令は、
前記プロセッサに、連続イベント処理(CEP)クエリを複数の別個の演算子に分割させる命令と、
前記プロセッサに、前記複数の別個の演算子内の各特定の演算子について別個の順序付け制約を判定させる命令と、
前記プロセッサに、前記プロセッサが前記複数の別個の演算子について判定した前記順序付け制約に少なくとも部分的に基づいて、前記CEPクエリについての順序付け制約を判定させる命令と、
前記プロセッサに、前記CEPクエリについての前記順序付け制約に基づいて、前記CEPクエリの複数のオペレーションが同時に実行可能であるかどうかを判定させる命令と、
前記プロセッサに、前記CEPクエリの複数のオペレーションが同時に実行可能であると判定したことに応じて、イベントストリームにおける特定のイベントに対して前記CEPクエリの前記複数のオペレーションを同時に処理する複数の実行のスレッドを生成させる命令とを備え、
前記複数の実行のスレッドの各々は、同時に、前記特定のイベントに対して前記複数のオペレーションのうちの1のオペレーションを実行する、コンピュータ読取可能プログラム。 - 請求項8〜13のいずれか1項に記載の方法をコンピュータに実行させるためのコンピュータ読取可能プログラム。
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