npawar commented on a change in pull request #6336:
URL: https://github.com/apache/incubator-pinot/pull/6336#discussion_r548252132
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File path:
pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/PinotHelixResourceManager.java
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@@ -1777,6 +1779,143 @@ public int reloadSegment(String tableNameWithType,
String segmentName) {
return numMessagesSent;
}
+ /**
+ * Resets a segment by disabling and then enabling the segment
+ */
+ public void resetSegment(String tableNameWithType, String segmentName, long
externalViewWaitTimeMs) {
+ IdealState idealState = getTableIdealState(tableNameWithType);
+ Preconditions.checkState(idealState != null, "Could not find ideal state
for table: %s", tableNameWithType);
+ ExternalView externalView = getTableExternalView(tableNameWithType);
+ Preconditions.checkState(externalView != null, "Could not find external
view for table: %s", tableNameWithType);
+ Set<String> instanceSet = idealState.getInstanceSet(segmentName);
+ Preconditions
+ .checkState(CollectionUtils.isNotEmpty(instanceSet), "Could not find
segment: %s in ideal state for table: %s");
+ Map<String, String> externalViewStateMap =
externalView.getStateMap(segmentName);
+ List<String> partitions = Lists.newArrayList(segmentName);
+
+ // First, disable or reset partition
+ for (String instance : instanceSet) {
+ if (externalViewStateMap == null ||
SegmentStateModel.ERROR.equals(externalViewStateMap.get(instance))) {
+ LOGGER.info("Resetting partition: {} of table: {}", segmentName,
tableNameWithType);
+ _helixAdmin.resetPartition(_helixClusterName, instance,
tableNameWithType, partitions);
+ } else {
+ LOGGER.info("Disabling partition: {} of table: {}", segmentName,
tableNameWithType);
+ _helixAdmin.enablePartition(false, _helixClusterName, instance,
tableNameWithType, partitions);
Review comment:
Did not follow your comment. That is exactly what's happening few lines
below after the external view stabilizes
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