Remove validations for clustering metadata

[hudi-bot]

When clustering plan has log files which delete all records in the partition/base file, the clustering used to fail before because of this validation validateClusteringCommit
[https://github.com/apache/hudi/blob/master/hudi-client/hudi-client-common/src/main/java/org/apache/hudi/client/BaseHoodieTableServiceClient.java#L490C5-L490C29] 
{code:java}
if (clusteringMetadata.getWriteStatuses().isEmpty()) {
HoodieClusteringPlan clusteringPlan = ClusteringUtils.getClusteringPlan(
table.getMetaClient(), ClusteringUtils.getInflightClusteringInstant(clusteringCommitTime, table.getActiveTimeline(), table.getInstantGenerator()).get())
.map(Pair::getRight).orElseThrow(() -> new HoodieClusteringException(
"Unable to read clustering plan for instant: " + clusteringCommitTime));
throw new HoodieClusteringException("Clustering plan produced 0 WriteStatus for " + clusteringCommitTime

• " #groups: " + clusteringPlan.getInputGroups().size() + " expected at least "
• clusteringPlan.getInputGroups().stream().mapToInt(HoodieClusteringGroup::getNumOutputFileGroups).sum()
• " write statuses");
  }{code}

We can remove this validation as it's not required.

JIRA info

• Link: https://issues.apache.org/jira/browse/HUDI-9060
• Type: Bug

[hudi-bot]

Linked PR(s)

• [HUDI-9060] Remove validations for clustering metadata #12860