Github user xuchuanyin commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/2624#discussion_r210212039
--- Diff:
datamap/bloom/src/main/java/org/apache/carbondata/datamap/bloom/BloomCoarseGrainDataMapFactory.java
---
@@ -222,102 +220,95 @@ public DataMapBuilder createBuilder(Segment segment,
String shardName,
@Override
public List<CoarseGrainDataMap> getDataMaps(Segment segment) throws
IOException {
- List<CoarseGrainDataMap> dataMaps = new
ArrayList<CoarseGrainDataMap>(1);
+ List<CoarseGrainDataMap> dataMaps = new ArrayList<>();
try {
Set<String> shardPaths = segmentMap.get(segment.getSegmentNo());
if (shardPaths == null) {
- String dataMapStorePath = DataMapWriter.getDefaultDataMapPath(
- getCarbonTable().getTablePath(), segment.getSegmentNo(),
dataMapName);
- CarbonFile[] carbonFiles =
FileFactory.getCarbonFile(dataMapStorePath).listFiles();
- shardPaths = new HashSet<>();
- for (CarbonFile carbonFile : carbonFiles) {
- shardPaths.add(carbonFile.getAbsolutePath());
- }
+ shardPaths = getAllShardPaths(getCarbonTable().getTablePath(),
segment.getSegmentNo());
segmentMap.put(segment.getSegmentNo(), shardPaths);
}
+ Set<String> filteredShards = segment.getFilteredIndexShardNames();
for (String shard : shardPaths) {
- BloomCoarseGrainDataMap bloomDM = new BloomCoarseGrainDataMap();
- bloomDM.init(new BloomDataMapModel(shard, cache));
- bloomDM.initIndexColumnConverters(getCarbonTable(),
dataMapMeta.getIndexedColumns());
- dataMaps.add(bloomDM);
+ if
(shard.endsWith(BloomIndexFileStore.MERGE_BLOOM_INDEX_SHARD_NAME) ||
+ filteredShards.contains(new File(shard).getName())) {
+ // Filter out the tasks which are filtered through Main datamap.
+ // for merge shard, shard pruning delay to be done before
pruning blocklet
+ BloomCoarseGrainDataMap bloomDM = new BloomCoarseGrainDataMap();
+ bloomDM.init(new BloomDataMapModel(shard, cache));
+ bloomDM.initIndexColumnConverters(getCarbonTable(),
dataMapMeta.getIndexedColumns());
+ bloomDM.setFilteredShard(filteredShards);
+ dataMaps.add(bloomDM);
+ }
}
} catch (Exception e) {
throw new IOException("Error occurs while init Bloom DataMap", e);
}
return dataMaps;
}
- @Override
- public List<CoarseGrainDataMap> getDataMaps(DataMapDistributable
distributable)
- throws IOException {
- List<CoarseGrainDataMap> coarseGrainDataMaps = new ArrayList<>();
- BloomCoarseGrainDataMap bloomCoarseGrainDataMap = new
BloomCoarseGrainDataMap();
- String indexPath = ((BloomDataMapDistributable)
distributable).getIndexPath();
- bloomCoarseGrainDataMap.init(new BloomDataMapModel(indexPath, cache));
- bloomCoarseGrainDataMap.initIndexColumnConverters(getCarbonTable(),
- dataMapMeta.getIndexedColumns());
- coarseGrainDataMaps.add(bloomCoarseGrainDataMap);
- return coarseGrainDataMaps;
- }
-
/**
- * returns all the directories of lucene index files for query
- * Note: copied from luceneDataMapFactory, will extract to a common
interface
+ * returns all shard directories of bloom index files for query
+ * if bloom index files are merged we should get only one shard path
*/
- private CarbonFile[] getAllIndexDirs(String tablePath, String segmentId)
{
- List<CarbonFile> indexDirs = new ArrayList<>();
- List<TableDataMap> dataMaps;
- try {
- // there can be multiple bloom datamaps present on a table, so get
all datamaps and form
- // the path till the index file directories in all datamaps folders
present in each segment
- dataMaps =
DataMapStoreManager.getInstance().getAllDataMap(getCarbonTable());
- } catch (IOException ex) {
- LOGGER.error(ex, String.format("failed to get datamaps for tablePath
%s, segmentId %s",
- tablePath, segmentId));
- throw new RuntimeException(ex);
- }
- if (dataMaps.size() > 0) {
- for (TableDataMap dataMap : dataMaps) {
- if
(dataMap.getDataMapSchema().getDataMapName().equals(this.dataMapName)) {
- List<CarbonFile> indexFiles;
- String dmPath = CarbonTablePath.getDataMapStorePath(tablePath,
segmentId,
- dataMap.getDataMapSchema().getDataMapName());
- FileFactory.FileType fileType = FileFactory.getFileType(dmPath);
- final CarbonFile dirPath = FileFactory.getCarbonFile(dmPath,
fileType);
- indexFiles = Arrays.asList(dirPath.listFiles(new
CarbonFileFilter() {
- @Override
- public boolean accept(CarbonFile file) {
- return file.isDirectory();
- }
- }));
- indexDirs.addAll(indexFiles);
+ private Set<String> getAllShardPaths(String tablePath, String segmentId)
{
--- End diff --
Can you provide a comment for this method?
---
