saihemanth-cloudera commented on code in PR #5578:
URL: https://github.com/apache/hive/pull/5578#discussion_r1955461189
##########
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/HMSHandler.java:
##########
@@ -7379,47 +7381,97 @@ public boolean
delete_partition_column_statistics(String dbName, String tableNam
if (colName != null) {
colName = colName.toLowerCase();
}
- startFunction("delete_column_statistics_by_partition",": table=" +
+ DeleteColumnStatisticsRequest request = new
DeleteColumnStatisticsRequest(parsedDbName[DB_NAME], tableName);
+ request.setEngine(engine);
+ request.setCat_name(parsedDbName[CAT_NAME]);
+ request.addToCol_names(colName);
+ request.addToPart_names(partName);
+ return delete_column_statistics_req(request);
+ }
+
+ @Override
+ public boolean delete_column_statistics_req(DeleteColumnStatisticsRequest
req) throws TException {
+ String dbName = normalizeIdentifier(req.getDb_name());
+ String tableName = normalizeIdentifier(req.getTbl_name());
+ List<String> colNames = req.getCol_names();
+ String engine = req.getEngine();
+ String[] parsedDbName = parseDbName(dbName, conf);
+ if (req.getCat_name() != null) {
+ parsedDbName[CAT_NAME] = normalizeIdentifier(req.getCat_name());
+ }
+ startFunction("delete_column_statistics_req", ": table=" +
TableName.getQualified(parsedDbName[CAT_NAME], parsedDbName[DB_NAME],
tableName) +
- " partition=" + partName + " column=" + colName);
+ " partitions=" + req.getPart_names() + " column=" + colNames + "
engine=" + engine);
boolean ret = false, committed = false;
-
- getMS().openTransaction();
+ List<ListenerEvent> events = new ArrayList<>();
+ EventType eventType = null;
+ final RawStore rawStore = getMS();
+ rawStore.openTransaction();
try {
- List<String> partVals = getPartValsFromName(getMS(),
parsedDbName[CAT_NAME], parsedDbName[DB_NAME], tableName, partName);
- Table table = getMS().getTable(parsedDbName[CAT_NAME],
parsedDbName[DB_NAME], tableName);
- // This API looks unused; if it were used we'd need to update stats
state and write ID.
- // We cannot just randomly nuke some txn stats.
+ Table table = rawStore.getTable(parsedDbName[CAT_NAME],
parsedDbName[DB_NAME], tableName);
+ boolean isPartitioned = table.getPartitionKeysSize() > 0;
if (TxnUtils.isTransactionalTable(table)) {
throw new MetaException("Cannot delete stats via this API for a
transactional table");
}
-
- ret = getMS().deletePartitionColumnStatistics(parsedDbName[CAT_NAME],
parsedDbName[DB_NAME], tableName,
- partName, partVals, colName, engine);
- if (ret) {
- if (transactionalListeners != null &&
!transactionalListeners.isEmpty()) {
- MetaStoreListenerNotifier.notifyEvent(transactionalListeners,
- EventType.DELETE_PARTITION_COLUMN_STAT,
- new DeletePartitionColumnStatEvent(parsedDbName[CAT_NAME],
parsedDbName[DB_NAME], tableName,
- partName, partVals, colName, engine, this));
+ if (!isPartitioned || req.isTableLevel()) {
+ ret = rawStore.deleteTableColumnStatistics(parsedDbName[CAT_NAME],
parsedDbName[DB_NAME], tableName, colNames, engine);
+ if (ret) {
+ eventType = EventType.DELETE_TABLE_COLUMN_STAT;
+ for (String colName :
+ colNames == null ?
table.getSd().getCols().stream().map(FieldSchema::getName).collect(Collectors.toList())
: colNames) {
+ if (transactionalListeners != null &&
!transactionalListeners.isEmpty()) {
+ MetaStoreListenerNotifier.notifyEvent(transactionalListeners,
eventType,
+ new DeleteTableColumnStatEvent(parsedDbName[CAT_NAME],
parsedDbName[DB_NAME], tableName, colName, engine, this));
+ }
+ events.add(new DeleteTableColumnStatEvent(parsedDbName[CAT_NAME],
parsedDbName[DB_NAME], tableName, colName, engine, this));
+ }
}
- if (!listeners.isEmpty()) {
- MetaStoreListenerNotifier.notifyEvent(listeners,
- EventType.DELETE_PARTITION_COLUMN_STAT,
- new DeletePartitionColumnStatEvent(parsedDbName[CAT_NAME],
parsedDbName[DB_NAME], tableName,
+ } else {
+ List<String> partNames = new ArrayList<>();
+ if (req.getPart_namesSize() > 0) {
+ partNames.addAll(req.getPart_names());
+ } else {
+ partNames.addAll(rawStore.listPartitionNames(parsedDbName[CAT_NAME],
parsedDbName[DB_NAME], tableName, (short) -1));
+ }
+ if (partNames.isEmpty()) {
+ // no partition found, bail out early
+ return true;
+ }
+ ret = rawStore.deletePartitionColumnStatistics(parsedDbName[CAT_NAME],
parsedDbName[DB_NAME], tableName,
+ partNames, colNames, engine);
+ if (ret) {
+ eventType = EventType.DELETE_PARTITION_COLUMN_STAT;
+ for (String colName : colNames == null ?
table.getSd().getCols().stream().map(FieldSchema::getName)
+ .collect(Collectors.toList()) : colNames) {
+ for (String partName : partNames) {
+ List<String> partVals = getPartValsFromName(getMS(),
parsedDbName[CAT_NAME], parsedDbName[DB_NAME], tableName, partName);
+ if (transactionalListeners != null &&
!transactionalListeners.isEmpty()) {
+ MetaStoreListenerNotifier.notifyEvent(transactionalListeners,
eventType,
+ new DeletePartitionColumnStatEvent(parsedDbName[CAT_NAME],
parsedDbName[DB_NAME], tableName,
+ partName, partVals, colName, engine, this));
+ }
+ events.add(new
DeletePartitionColumnStatEvent(parsedDbName[CAT_NAME], parsedDbName[DB_NAME],
tableName,
Review Comment:
This will be a performance killer while dropping partition stats for 10K+
partitions because you are fetching table object from the metastore for each
partition via getPartValsFromName(Rawstore, catalogName, dbName, tableName,
partName).
Please change this to getPartValsFromName(Table, partName) since you already
fetched the table object previously.
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