{"record":{"id":"05ad85b789047421","repo":"bytebase/bytebase","slug":"failed-to-generate-index-sdl-for-s-s","errorCode":null,"errorMessage":"failed to generate index SDL for %s.%s","messagePattern":"failed to generate index SDL for (.+?)\\.(.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"warning","filePath":"backend/plugin/schema/pg/get_database_definition.go","lineNumber":4318,"sourceCode":"\n\t\t\t// Write materialized view comment if present\n\t\t\tif len(materializedView.Comment) > 0 {\n\t\t\t\tbuf.WriteString(\"\\n\")\n\t\t\t\tif err := writeMaterializedViewCommentSDL(&buf, schemaName, materializedView); err != nil {\n\t\t\t\t\treturn nil, errors.Wrapf(err, \"failed to generate materialized view comment for %s.%s\", schemaName, materializedView.Name)\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Write indexes on materialized view\n\t\t\tfor _, index := range materializedView.Indexes {\n\t\t\t\t// Skip constraint-based indexes\n\t\t\t\tif index.Primary || index.IsConstraint {\n\t\t\t\t\tcontinue\n\t\t\t\t}\n\n\t\t\t\tbuf.WriteString(\"\\n\")\n\t\t\t\tif err := writeIndexSDL(&buf, schemaName, materializedView.Name, index, false); err != nil {\n\t\t\t\t\treturn nil, errors.Wrapf(err, \"failed to generate index SDL for %s.%s\", schemaName, index.Name)\n\t\t\t\t}\n\t\t\t\tbuf.WriteString(\";\\n\")\n\n\t\t\t\t// Write index comment if present\n\t\t\t\tif len(index.Comment) > 0 {\n\t\t\t\t\tbuf.WriteString(\"\\n\")\n\t\t\t\t\tif err := writeIndexCommentSDL(&buf, schemaName, index); err != nil {\n\t\t\t\t\t\treturn nil, errors.Wrapf(err, \"failed to generate index comment for %s.%s\", schemaName, index.Name)\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\n\t\t\tfiles = append(files, schema.File{\n\t\t\t\tName:    fmt.Sprintf(\"schemas/%s/materialized_views/%s.sql\", schemaName, materializedView.Name),\n\t\t\t\tContent: buf.String(),\n\t\t\t})\n\t\t}\n","sourceCodeStart":4300,"sourceCodeEnd":4336,"githubUrl":"https://github.com/bytebase/bytebase/blob/1870550677fe08f0d2a78c07acd27541464eb945/backend/plugin/schema/pg/get_database_definition.go#L4300-L4336","documentation":"This error wraps failures from writeIndexSDL while emitting the CREATE INDEX statement for a non-constraint index on a materialized view during multi-file SDL generation. As with the other SDL writers in this file, the sink is a strings.Builder whose writes cannot fail, so the wrap is defensive. If it fires, the message identifies the schema and index name whose SDL could not be generated.","triggerScenarios":"GetMultiFileDatabaseDefinition iterates materializedView.Indexes, skips primary/constraint indexes, and writeIndexSDL returns a non-nil error for a given index.","commonSituations":"Only realistically triggered by an injected/redirected failing writer (disk full, closed pipe) or future refactor of writeIndexSDL to a real I/O sink; not by any property of the index metadata itself.","solutions":["Re-run the SDL export to rule out a transient writer failure","Check disk space / permissions on the output destination if SDL is streamed to disk","Unwrap the error to see the underlying writer failure","If seen after a code change, review writeIndexSDL for newly introduced I/O"],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":null,"typeGuard":null,"tryCatchPattern":"files, err := GetMultiFileDatabaseDefinition(ctx, db, meta)\nif err != nil {\n    var wrapped error\n    if errors.As(err, &wrapped) && strings.Contains(err.Error(), \"failed to generate index SDL\") {\n        return fmt.Errorf(\"retry SDL export: %w\", wrapped)\n    }\n    return err\n}","preventionTips":["Avoid redirecting SDL generation to fallible I/O mid-run; buffer in memory and write once","Verify disk space/permissions before exporting","Retry the export on transient I/O errors","Report index names from the wrapped message when filing bugs"],"tags":["sdl","postgres","index","io-error"],"backgroundTag":"file-write-failed","analyzedSha":"1870550677fe08f0d2a78c07acd27541464eb945","analyzedAt":"2026-09-06T21:16:13.665Z","contentChangedAt":"2026-09-06T21:16:13.665Z","schemaVersion":2},"datasetVersion":"2026-09-14T00:17:10.932Z"}