wsjz commented on code in PR #24911:
URL: https://github.com/apache/doris/pull/24911#discussion_r1360265534
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fe/be-java-extensions/max-compute-scanner/src/main/java/org/apache/doris/maxcompute/MaxComputeJniScanner.java:
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@@ -139,13 +145,24 @@ public void open() throws IOException {
return;
}
try {
- TableTunnel.DownloadSession session = curTableScan.getSession();
+ TableTunnel.DownloadSession session;
+ if (partitionSpec != null) {
+ PartitionSpec partSpec = new PartitionSpec(partitionSpec);
+ session = curTableScan.openDownLoadSession(partSpec);
+ } else {
+ session = curTableScan.openDownLoadSession();
+ }
long start = startOffset == -1L ? 0 : startOffset;
long recordCount = session.getRecordCount();
totalRows = splitSize > 0 ? Math.min(splitSize, recordCount) :
recordCount;
arrowAllocator = new RootAllocator(Long.MAX_VALUE);
- curReader = session.openArrowRecordReader(start, totalRows,
readColumns, arrowAllocator);
+ Set<String> partitionColumns =
session.getSchema().getPartitionColumns().stream()
+ .map(Column::getName)
+ .collect(Collectors.toSet());
+ List<Column> maxComputeColumns = new ArrayList<>(readColumns);
+ maxComputeColumns.removeIf(e ->
partitionColumns.contains(e.getName()));
Review Comment:
max compute depart the partition columns from common columns
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