mqliang commented on a change in pull request #6710:
URL: https://github.com/apache/incubator-pinot/pull/6710#discussion_r604531810
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File path:
pinot-common/src/main/java/org/apache/pinot/common/utils/DataTable.java
##########
@@ -80,4 +85,87 @@
double[] getDoubleArray(int rowId, int colId);
String[] getStringArray(int rowId, int colId);
+
+ /* The MetadataKeys is used in V3, where we present metadata as
Map<MetadataKeys, String>
+ * ATTENTION:
+ * - Don't change existing keys.
+ * - Don't remove existing keys.
+ * - Always add new keys to the end.
+ * Otherwise, backward compatibility will be broken.
+ */
+ enum MetadataKeys {
+ UNKNOWN("unknown"),
+ TABLE("table"), // NOTE: this key is only used in PrioritySchedulerTest
+ EXCEPTION("Exception"),
+ NUM_DOCS_SCANNED("numDocsScanned"),
+ NUM_ENTRIES_SCANNED_IN_FILTER("numEntriesScannedInFilter"),
+ NUM_ENTRIES_SCANNED_POST_FILTER("numEntriesScannedPostFilter"),
+ NUM_SEGMENTS_QUERIED("numSegmentsQueried"),
+ NUM_SEGMENTS_PROCESSED("numSegmentsProcessed"),
+ NUM_SEGMENTS_MATCHED("numSegmentsMatched"),
+ NUM_CONSUMING_SEGMENTS_PROCESSED("numConsumingSegmentsProcessed"),
+ MIN_CONSUMING_FRESHNESS_TIME_MS("minConsumingFreshnessTimeMs"),
+ TOTAL_DOCS("totalDocs"),
+ NUM_GROUPS_LIMIT_REACHED("numGroupsLimitReached"),
+ TIME_USED_MS("timeUsedMs"),
+ TRACE_INFO("traceInfo"),
+ REQUEST_ID("requestId"),
+ NUM_RESIZES("numResizes"),
+ RESIZE_TIME_MS("resizeTimeMs"),
+ THREAD_CPU_TIME_NS("threadCpuTimeNs"),
+ ;
+
+ private static final Map<String, MetadataKeys> _nameToEnumKeyMap = new
HashMap<>();
+ // _intValueMetadataKeys contains all metadata keys which has value of int
type.
+ private static final Set<MetadataKeys> _intValueMetadataKeys = ImmutableSet
+ .of(MetadataKeys.NUM_SEGMENTS_QUERIED,
MetadataKeys.NUM_SEGMENTS_PROCESSED, MetadataKeys.NUM_SEGMENTS_MATCHED,
+ MetadataKeys.NUM_RESIZES,
MetadataKeys.NUM_CONSUMING_SEGMENTS_PROCESSED, MetadataKeys.NUM_RESIZES);
+ // _longValueMetadataKeys contains all metadata keys which has value of
long type.
+ private static final Set<MetadataKeys> _longValueMetadataKeys =
ImmutableSet
+ .of(MetadataKeys.NUM_DOCS_SCANNED,
MetadataKeys.NUM_ENTRIES_SCANNED_IN_FILTER,
+ MetadataKeys.NUM_ENTRIES_SCANNED_POST_FILTER,
MetadataKeys.MIN_CONSUMING_FRESHNESS_TIME_MS,
+ MetadataKeys.TOTAL_DOCS, MetadataKeys.TIME_USED_MS,
MetadataKeys.REQUEST_ID, MetadataKeys.RESIZE_TIME_MS,
+ MetadataKeys.THREAD_CPU_TIME_NS);
+ private final String _name;
+
+ MetadataKeys(String name) {
+ this._name = name;
+ }
+
+ // getByOrdinal returns an optional enum key for a given ordinal
+ public static Optional<MetadataKeys> getByOrdinal(int ordinal) {
+ if (ordinal >= MetadataKeys.values().length) {
+ return Optional.empty();
+ }
+ return Optional.ofNullable(MetadataKeys.values()[ordinal]);
+ }
+
+ // getByName returns an optional enum key for a given name.
+ public static Optional<MetadataKeys> getByName(String name) {
+ return Optional.ofNullable(_nameToEnumKeyMap.getOrDefault(name, null));
+ }
+
+ // isIntValueMetadataKey returns true if the given key has value of int
type.
+ public static boolean isIntValueMetadataKey(MetadataKeys key) {
+ return _intValueMetadataKeys.contains(key);
+ }
+
+ // isLongValueMetadataKey returns true if the given key has value of long
type.
+ public static boolean isLongValueMetadataKey(MetadataKeys key) {
+ return _longValueMetadataKeys.contains(key);
+ }
+
+ // getName returns the associated name(string) of the enum key.
+ public String getName() {
+ return _name;
+ }
+
+ static {
Review comment:
The code was put here by Intellj reformatting. I'd suggest keep it here,
since assume some change this file, and run IntellJ reformat before commit, it
will be moved to here anyway.
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