deniskuzZ commented on code in PR #4346:
URL: https://github.com/apache/hive/pull/4346#discussion_r1205191283
##########
iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/HiveIcebergStorageHandler.java:
##########
@@ -1408,4 +1420,64 @@ Boolean hasAppendsOnly(Iterable<Snapshot> snapshots,
SnapshotContext since) {
return null;
}
+
+ @Override
+ public List<String> showPartitions(DDLOperationContext context,
org.apache.hadoop.hive.ql.metadata.Table hmstbl) {
+ Configuration confs = context.getConf();
+ Path path = new Path(hmstbl.getParameters().get("metadata_location"));
+ List<String> parts = Lists.newArrayList();
+ JobConf job = HiveTableUtil.getJobConf(confs, path, hmstbl);
+ Class<? extends InputFormat> formatter = hmstbl.getInputFormatClass();
+
+ try {
+ InputFormat inputFormat =
FetchOperator.getInputFormatFromCache(formatter, job);
+ InputSplit[] splits = inputFormat.getSplits(job, 1);
+ try (RecordReader<WritableComparable, Writable> reader =
inputFormat.getRecordReader(splits[0], job,
+ Reporter.NULL)) {
+ parts = getParts(context, job, reader, hmstbl);
+ }
+ return parts;
+ } catch (Exception e) {
+ LOG.warn("Warn: Unable to show partitions for iceberg table - ", e);
+ }
+ return parts;
+ }
+
+ @Override
+ public boolean supportsPartitions() {
+ return true;
+ }
+
+ private List<String> getParts(DDLOperationContext context, Configuration job,
+ RecordReader<WritableComparable, Writable> reader,
org.apache.hadoop.hive.ql.metadata.Table hmstbl)
+ throws Exception {
+
+ List<String> parts = Lists.newArrayList();
+ Writable value = reader.createValue();
+ WritableComparable key = reader.createKey();
+ boolean notEoF = true;
+ String prevRow = "";
+
+ try (FetchFormatter fetcher = new DefaultFetchFormatter()) {
+ fetcher.initialize(job, HiveTableUtil.getProps());
+ org.apache.hadoop.hive.ql.metadata.Table metaDataPartTable =
+ context.getDb().getTable(hmstbl.getDbName(), hmstbl.getTableName(),
"partitions", true);
+
+ while (notEoF) {
+ reader.next(key, value);
Review Comment:
doesn't it return EOF marker?
````
opNotEOF = reader.next(key, value);
````
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