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ASF GitHub Bot commented on DRILL-5089: --------------------------------------- Github user arina-ielchiieva commented on a diff in the pull request: https://github.com/apache/drill/pull/1032#discussion_r151714418 --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/store/dfs/FileSystemSchemaFactory.java --- @@ -50,11 +53,23 @@ public static final String DEFAULT_WS_NAME = "default"; + public static final String LOCAL_FS_SCHEME = "file"; + private List<WorkspaceSchemaFactory> factories; private String schemaName; + protected FileSystemPlugin plugin; public FileSystemSchemaFactory(String schemaName, List<WorkspaceSchemaFactory> factories) { - super(); + // when the correspondent FileSystemPlugin is not passed in, we dig into ANY workspace factory to get it. + if (factories.size() > 0 ) { --- End diff -- Please remove space `if (factories.size() > 0) {`. > Skip initializing all enabled storage plugins for every query > ------------------------------------------------------------- > > Key: DRILL-5089 > URL: https://issues.apache.org/jira/browse/DRILL-5089 > Project: Apache Drill > Issue Type: Improvement > Components: Query Planning & Optimization > Affects Versions: 1.9.0 > Reporter: Abhishek Girish > Assignee: Chunhui Shi > Priority: Critical > > In a query's lifecycle, at attempt is made to initialize each enabled storage > plugin, while building the schema tree. This is done regardless of the actual > plugins involved within a query. > Sometimes, when one or more of the enabled storage plugins have issues - > either due to misconfiguration or the underlying datasource being slow or > being down, the overall query time taken increases drastically. Most likely > due the attempt being made to register schemas from a faulty plugin. > For example, when a jdbc plugin is configured with SQL Server, and at one > point the underlying SQL Server db goes down, any Drill query starting to > execute at that point and beyond begin to slow down drastically. > We must skip registering unrelated schemas (& workspaces) for a query. -- This message was sent by Atlassian JIRA (v6.4.14#64029)