Data Processing System and Apparatus

A system comprising:

• a plurality of index nodes, wherein each of the plurality of index nodes is configured to manage one data range of a plurality of data ranges corresponding to a target object, and wherein the plurality of index nodes comprises a first index node;
• a plurality of worker nodes;
• and
• a coordinator node configured to:
• generate a first query task based on a query request;
• and
• send the first query task to the first index node, wherein the query request is configured to query, from the target object, queried data that meets a condition, wherein the target object is divided into a plurality of shards, and wherein the plurality of shards is stored in at least one storage node,
• wherein the first index node is configured to:
• receive the first query task from the coordinator node;
• determine, based on the first query task, a target shard is of a plurality of target shards in a first data range of the plurality of data ranges and managed by the first index node, and comprising the queried data, and
• wherein the coordinator node is further configured to:
• receive, from the plurality of index nodes, second information about the plurality of target shards;
• generate second query tasks for the plurality of target shards;
• and
• schedule the plurality of worker nodes to execute the second query tasks.