Github user ramkrish86 commented on a diff in the pull request:
https://github.com/apache/phoenix/pull/12#discussion_r17772474
--- Diff:
phoenix-core/src/main/java/org/apache/phoenix/coprocessor/MetaDataEndpointImpl.java
---
@@ -668,11 +677,89 @@ private PTable getTable(RegionScanner scanner, long
clientTimeStamp, long tableT
addColumnToTable(results, colName, famName, colKeyValues,
columns, saltBucketNum != null);
}
}
-
+ PName physicalTableName = physicalTables.isEmpty() ?
PNameFactory.newName(SchemaUtil.getTableName(
+ schemaName.getString(), tableName.getString())) :
physicalTables.get(0);
+ PTableStats stats =
updateStatsInternal(physicalTableName.getBytes(), columns);
return PTableImpl.makePTable(tenantId, schemaName, tableName,
tableType, indexState, timeStamp,
tableSeqNum, pkName, saltBucketNum, columns, tableType ==
INDEX ? dataTableName : null,
indexes, isImmutableRows, physicalTables, defaultFamilyName,
viewStatement, disableWAL,
- multiTenant, viewType, viewIndexId, indexType);
+ multiTenant, viewType, viewIndexId, indexType, stats);
+ }
+
+ private PTableStats updateStatsInternal(byte[] tableNameBytes,
List<PColumn> columns)
+ throws IOException {
+ List<PName> family =
Lists.newArrayListWithExpectedSize(columns.size());
+ for (PColumn column : columns) {
+ PName familyName = column.getFamilyName();
+ if (familyName != null) {
+ family.add(familyName);
+ }
+ }
+ HTable statsHTable = null;
+ try {
+ // Can we do a new HTable instance here? Or get it from a pool
or cache of these instances?
+ statsHTable = new HTable(this.env.getConfiguration(),
+ PhoenixDatabaseMetaData.SYSTEM_STATS_NAME_BYTES);
+ Scan s = new Scan();
+ if (tableNameBytes != null) {
+ // Check for an efficient way here
+ s.setStartRow(tableNameBytes);
+ s.setStopRow(ByteUtil.nextKey(tableNameBytes));
+ }
+ ResultScanner scanner = statsHTable.getScanner(s);
+ Result result = null;
+ byte[] fam = null;
+ List<byte[]> guidePosts =
Lists.newArrayListWithExpectedSize(columns.size());
+ TreeMap<byte[], List<byte[]>> guidePostsPerCf = new
TreeMap<byte[], List<byte[]>>(Bytes.BYTES_COMPARATOR);
+ while ((result = scanner.next()) != null) {
+ CellScanner cellScanner = result.cellScanner();
+ while (cellScanner.advance()) {
+ Cell current = cellScanner.current();
+ // For now collect only guide posts
+ if (Bytes.equals(current.getQualifierArray(),
current.getQualifierOffset(),
+ current.getQualifierLength(),
PhoenixDatabaseMetaData.GUIDE_POSTS_BYTES, 0,
+
PhoenixDatabaseMetaData.GUIDE_POSTS_BYTES.length)) {
+ byte[] cfInCell =
StatisticsUtils.getCFFromRowKey(tableNameBytes, current.getRowArray(),
+ current.getRowOffset(),
current.getRowLength());
+ if (fam == null) {
+ fam = cfInCell;
+ } else if (!Bytes.equals(fam, cfInCell)) {
+ // Sort all the guide posts
+ Collections.sort(guidePosts,
Bytes.BYTES_COMPARATOR);
--- End diff --
Am sorting only here. Not at the end. Anyway can change it to the end.
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