File query method and device in distributed file system, equipment and medium

Abstract

The invention discloses a file query method and device in a distributed file system, electronic equipment and a computer readable storage medium, and the file query method is applied to a client, andcomprises the steps: receiving an input filtering query instruction in a preset format; determining a target directory and query parameters by analyzing the filtering query instruction; generating a filtering query request message carrying the target directory and the query parameters; sending the filtering query request message to a metadata server; and after the metadata server executes the filtering query in the target directory according to the query parameter, receiving target file data returned by the metadata server. According to the method, a new instruction format and a related instruction analysis and processing flow are set, on one hand, layer-by-layer calling of the system when the request is sent is omitted, and on the other hand, filtering query is directly carried out by themetadata server, so that the file query processing process is effectively simplified, and the file query efficiency is improved.

Description

technical field [0001] The present application relates to the technical field of distributed systems, and in particular to a file query method, device, electronic equipment and computer-readable storage medium in a distributed file system. Background technique [0002] Distributed file systems are widely used in many government and enterprise departments today. In a distributed file system, important file information is stored in a metadata server (Metadata Server). In the prior art, when a user or an administrator needs to query certain files through the client, the ls command of the Linux system is generally used. After the call, the client can request the query file from the metadata server in the distributed system, and the response is slow; then, the metadata server sends all the file information to the client, and the client performs screening and query. Since all file information is communicated, it takes a lot of time. Moreover, because the filtering function of t...

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Problems solved by technology

Since all file information is communicated, it takes a lot of time

Moreover, because the filtering function of the Linuxls command itself is weak, it only supports some simple wildcards (such as *, ?, [], etc.) You also need to use awk and regular expressions, which is very complicated

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