deniskuzZ commented on code in PR #3935:
URL: https://github.com/apache/hive/pull/3935#discussion_r1071107521
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ql/src/java/org/apache/hadoop/hive/ql/txn/compactor/Worker.java:
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@@ -315,10 +315,14 @@ protected Boolean findNextCompactionAndExecute(boolean
collectGenericStats, bool
return false;
}
- if (!ci.type.equals(CompactionType.REBALANCE) && ci.numberOfBuckets > 0)
{
- if (LOG.isWarnEnabled()) {
- LOG.warn("Only the REBALANCE compaction accepts the number of
buckets clause (CLUSTERED INTO {N} BUCKETS). " +
- "Since the compaction request is {}, it will be ignored.",
ci.type);
+ boolean insertOnly = AcidUtils.isInsertOnlyTable(table.getParameters());
+ if (LOG.isWarnEnabled() && ci.type.equals(CompactionType.REBALANCE) &&
insertOnly) {
+ LOG.warn("REBALANCE compaction requested on an insert-only table ({}).
Falling back to MAJOR compaction as " +
+ "REBALANCE compaction is supported only on full-acid tables",
table.getTableName());
+ if (ci.numberOfBuckets > 0) {
Review Comment:
check was previously for `!ci.type.equals(CompactionType.REBALANCE)`, now
it's inside `ci.type.equals(CompactionType.REBALANCE) && insertOnly`, is it
expected?
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