phoenix-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From GitBox <...@apache.org>
Subject [GitHub] [phoenix] kadirozde commented on a change in pull request #469: PHOENIX-5156 Consistent Global Indexes for Non-Transactional Tables
Date Thu, 25 Apr 2019 19:35:59 GMT
kadirozde commented on a change in pull request #469: PHOENIX-5156 Consistent Global Indexes
for Non-Transactional Tables
URL: https://github.com/apache/phoenix/pull/469#discussion_r278700322
 
 

 ##########
 File path: phoenix-core/src/main/java/org/apache/phoenix/index/GlobalIndexRowVerifier.java
 ##########
 @@ -0,0 +1,208 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.phoenix.index;
+
+import static org.apache.phoenix.coprocessor.BaseScannerRegionObserver.CHECK_VERIFY_COLUMN;
+import static org.apache.phoenix.coprocessor.BaseScannerRegionObserver.EMPTY_COLUMN_FAMILY_NAME;
+import static org.apache.phoenix.coprocessor.BaseScannerRegionObserver.PHYSICAL_DATA_TABLE_NAME;
+import static org.apache.phoenix.query.QueryConstants.GLOBAL_INDEX_VERIFIED_COLUMN_NAME_BYTES;
+import static org.apache.phoenix.schema.types.PDataType.FALSE_BYTES;
+import static org.apache.phoenix.schema.types.PDataType.TRUE_BYTES;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+import org.apache.hadoop.hbase.Cell;
+import org.apache.hadoop.hbase.DoNotRetryIOException;
+import org.apache.hadoop.hbase.client.Delete;
+import org.apache.hadoop.hbase.client.Mutation;
+import org.apache.hadoop.hbase.client.ResultScanner;
+import org.apache.hadoop.hbase.client.Scan;
+import org.apache.hadoop.hbase.client.Table;
+import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment;
+import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
+import org.apache.hadoop.hbase.regionserver.Region;
+import org.apache.hadoop.hbase.regionserver.RegionScanner;
+import org.apache.hadoop.hbase.util.Bytes;
+import org.apache.phoenix.coprocessor.BaseScannerRegionObserver;
+import org.apache.phoenix.util.EnvironmentEdgeManager;
+import org.apache.phoenix.util.IndexUtil;
+import org.apache.phoenix.util.SchemaUtil;
+import org.apache.phoenix.util.ServerUtil;
+
+/**
+ * 
+ * Class that verifies a given row of a non-transactional global index.
+ * An instance of this class is created by a scan region observer
+ * and called to verify individual rows of a non-transactional global index
+ *
+ */
+public class GlobalIndexRowVerifier {
+    private final long AGE_THRESHOLD_TO_DELETE_MS = 3600*1000; /* One hour */
+    private boolean verify;
+    private Scan scan;
+    private Scan indexScan;
+    private Scan buildIndexScan = null;
+    private Table dataHTable;
+    private byte[] emptyCF;
+    private IndexMaintainer indexMaintainer = null;
+    private byte[][] viewConstants = null;
+    private RegionCoprocessorEnvironment env;
+    private Region region = null;
+
+    public GlobalIndexRowVerifier(RegionCoprocessorEnvironment env, Scan scan) {
+        verify = scan.getAttribute(CHECK_VERIFY_COLUMN) != null;
+        if (verify) {
+            this.env = env;
+            this.scan = scan;
+            emptyCF = scan.getAttribute(EMPTY_COLUMN_FAMILY_NAME);
+        }
+    }
+
+    public GlobalIndexRowVerifier(RegionCoprocessorEnvironment env, Scan scan,
+                                  IndexMaintainer indexMaintainer, byte[][] viewConstants)
{
+        this(env, scan);
+        if (verify) {
+            this.indexMaintainer = indexMaintainer;
+            this.viewConstants = viewConstants;
+        }
+    }
+
+    private List<Cell> rebuildSingleIndexRow(byte[] indexRowKey, long ts) throws IOException
{
+        // Build the data table row key from the index table row key
+        if (buildIndexScan == null) {
+            region = env.getRegion();
+            buildIndexScan = new Scan();
+            indexScan = new Scan(scan);
+            byte[] dataTableName = scan.getAttribute(PHYSICAL_DATA_TABLE_NAME);
+            byte[] indexTableName = region.getRegionInfo().getTable().getName();
+            dataHTable = ServerUtil.getHTableForCoprocessorScan(env,
+                    SchemaUtil.getPhysicalTableName(dataTableName, env.getConfiguration()));
+            if (indexMaintainer == null) {
+                byte[] md = scan.getAttribute(PhoenixIndexCodec.INDEX_PROTO_MD);
+                List<IndexMaintainer> maintainers = IndexMaintainer.deserialize(md,
true);
+                Iterator<IndexMaintainer> maintainerIterator = maintainers.iterator();
+                while (maintainerIterator.hasNext()) {
+                    IndexMaintainer maintainer = maintainerIterator.next();
+                    if (Bytes.compareTo(indexTableName, maintainer.getIndexTableName()) ==
0) {
+                        indexMaintainer = maintainer;
+                        break;
+                    }
+                }
+            }
+            if (indexMaintainer == null) {
+                throw new DoNotRetryIOException(
+                        "rebuildSingleIndexRow: IndexMaintainer is not included in scan attributes
for " +
+                                region.getRegionInfo().getTable().getNameAsString());
+            }
+            if (viewConstants == null) {
+                viewConstants = IndexUtil.deserializeViewConstantsFromScan(scan);
+            }
+            buildIndexScan.setAttribute(BaseScannerRegionObserver.UNGROUPED_AGG, TRUE_BYTES);
+            buildIndexScan.setAttribute(PhoenixIndexCodec.INDEX_PROTO_MD, scan.getAttribute(PhoenixIndexCodec.INDEX_PROTO_MD));
+            buildIndexScan.setAttribute(BaseScannerRegionObserver.REBUILD_INDEXES, TRUE_BYTES);
+        }
+        // Rebuild the index row from the corresponding the row in the the data table
+        byte[] dataRowKey = indexMaintainer.buildDataRowKey(new ImmutableBytesWritable(indexRowKey),
viewConstants);
+        buildIndexScan.withStartRow(dataRowKey, true);
+        buildIndexScan.withStopRow(dataRowKey, true);
+        buildIndexScan.setTimestamp(ts);
+        buildIndexScan.setRaw(true);
+        ResultScanner resultScanner = dataHTable.getScanner(buildIndexScan);
+        List<Cell> row = new ArrayList<Cell>();
+        if (resultScanner.next() == null) {
+            // Corresponding row does not exist in data table. Need to delete the row from
index if it is old enough
+            if (ts - EnvironmentEdgeManager.currentTimeMillis() > AGE_THRESHOLD_TO_DELETE_MS)
{
+                Delete del = new Delete(indexRowKey, ts);
+                Mutation[] mutations = new Mutation[]{del};
+                region.batchMutate(mutations);
+            }
+            return row;
+        }
+
+        // Scan the newly build row
+        indexScan.withStartRow(indexRowKey, true);
+        indexScan.withStopRow(indexRowKey, true);
+        RegionScanner regionScanner = region.getScanner(indexScan);
+        regionScanner.next(row);
+        regionScanner.close();
+        return row;
+    }
+
+    public boolean verifyRow(List<Cell> cellList) throws IOException {
+        if (!verify) {
+            return true;
+        }
+        boolean rebuild = false;
+        boolean verifiedColumnExist = false;
+        long verifiedTs = 0;
+        long maxTs;
+        long ts;
+        Cell cell = null;
+        maxTs = 0;
+        if (cellList.isEmpty()) {
+            return true;
+        }
+        Iterator<Cell> cellIterator = cellList.iterator();
+        while (cellIterator.hasNext()) {
+            cell = cellIterator.next();
+            if (cell.getType() != Cell.Type.Put) {
+                continue;
+            }
+            ts = cell.getTimestamp();
+            if (ts > maxTs) {
+                maxTs = ts;
+            }
+            if (Bytes.compareTo(cell.getFamilyArray(), cell.getFamilyOffset(), cell.getFamilyLength(),
 
 Review comment:
   Done

----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
 
For queries about this service, please contact Infrastructure at:
users@infra.apache.org


With regards,
Apache Git Services

Mime
View raw message