Jackie-Jiang commented on code in PR #11850:
URL: https://github.com/apache/pinot/pull/11850#discussion_r1397855016
##########
pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/PinotHelixResourceManager.java:
##########
@@ -3923,18 +3935,21 @@ public Map<String, List<InstanceInfo>>
getTableToLiveBrokersMapping() {
.collect(Collectors.toMap(InstanceConfig::getInstanceName,
Function.identity()));
Map<String, List<InstanceInfo>> result = new HashMap<>();
+ if (optionalTableName.isPresent()) {
+ String tableName = optionalTableName.get();
+ List<InstanceInfo> hosts = getBrokersFromTableNameWithType(ev,
tableName, instanceConfigMap,
+ this::getLiveBrokerInstancesForTable);
+ if (!hosts.isEmpty()) {
+ result.put(tableName, hosts);
Review Comment:
I think we want to put hosts when table exists, even if it is empty
##########
pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/PinotHelixResourceManager.java:
##########
@@ -3908,11 +3908,23 @@ public TableStats getTableStats(String
tableNameWithType) {
return new TableStats(creationTime);
}
+ @FunctionalInterface
+ interface Func<T> {
+ List<T> apply(ExternalView ev, String tableName, Map<String, String>
brokersToState,
+ Map<String, InstanceConfig> instanceConfigMap);
+ }
+
+ static <T> List<T> getBrokers(ExternalView ev, String tableName, Map<String,
String> brokersToState,
+ Map<String, InstanceConfig> instanceConfigMap, Func<T>
relevantBrokerFunc) {
+ return relevantBrokerFunc.apply(ev, tableName, brokersToState,
instanceConfigMap);
+ }
Review Comment:
These are not common functions, and I find them quite hard to read. Can we
keep it simple? It is okay if we need to repeat some code
##########
pinot-controller/src/main/java/org/apache/pinot/controller/helix/core/PinotHelixResourceManager.java:
##########
@@ -3923,18 +3935,21 @@ public Map<String, List<InstanceInfo>>
getTableToLiveBrokersMapping() {
.collect(Collectors.toMap(InstanceConfig::getInstanceName,
Function.identity()));
Map<String, List<InstanceInfo>> result = new HashMap<>();
+ if (optionalTableName.isPresent()) {
+ String tableName = optionalTableName.get();
Review Comment:
This `tableName` can be raw (without type suffix). The returned map should
contain the actual table name with type suffix
##########
pinot-controller/src/main/java/org/apache/pinot/controller/api/resources/PinotTableInstances.java:
##########
@@ -165,9 +166,11 @@ public List<String> getLiveBrokersForTable(
@ApiResponses(value = {
@ApiResponse(code = 200, message = "Success"), @ApiResponse(code = 500,
message = "Internal server error")
})
- public Map<String, List<InstanceInfo>> getLiveBrokers() {
+ public Map<String, List<InstanceInfo>> getLiveBrokers(
+ @ApiParam(value = "Table name (with or without type)", required =
false)
+ @QueryParam("tablename") Optional<String> tablename) {
Review Comment:
Query param should be `tableName`
Shall we keep it consistent with other APIs where optional field is
represented as `@Nullable`
```suggestion
@QueryParam("tableName") @Nullable tableName) {
```
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