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https://issues.apache.org/jira/browse/PHOENIX-6888?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17707438#comment-17707438
]
ASF GitHub Bot commented on PHOENIX-6888:
-----------------------------------------
jpisaac commented on code in PR #1569:
URL: https://github.com/apache/phoenix/pull/1569#discussion_r1154801675
##########
phoenix-core/src/it/java/org/apache/phoenix/end2end/ExplainPlanWithStatsEnabledIT.java:
##########
@@ -165,7 +165,7 @@ public void testBytesRowsForSelectWithLimitIgnored() throws
Exception {
ResultSet rs = conn.createStatement().executeQuery(sql);
assertFalse(rs.next());
Estimate info = getByteRowEstimates(conn, sql, binds);
- assertEquals((Long) 390L, info.estimatedBytes);
+ assertEquals((Long) 691L, info.estimatedBytes);
Review Comment:
What caused the increased estimates?
##########
phoenix-core/src/it/java/org/apache/phoenix/end2end/index/GlobalIndexCheckerIT.java:
##########
@@ -68,10 +70,14 @@
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;
import org.apache.phoenix.thirdparty.com.google.common.collect.Lists;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
@Category(NeedsOwnMiniClusterTest.class)
@RunWith(Parameterized.class)
public class GlobalIndexCheckerIT extends BaseTest {
+ private static final Logger LOG =
Review Comment:
nit: Remove unused variables
##########
phoenix-core/src/it/java/org/apache/phoenix/end2end/ExplainPlanWithStatsEnabledIT.java:
##########
@@ -204,7 +204,7 @@ public void testBytesRowsForSelectOnIndex() throws
Exception {
assertTrue(rs.next());
}
Estimate info = getByteRowEstimates(conn, sql, binds);
- assertEquals((Long) 390L, info.estimatedBytes);
+ assertEquals((Long) 691L, info.estimatedBytes);
Review Comment:
same here
##########
phoenix-core/src/main/java/org/apache/phoenix/coprocessor/CompactionScanner.java:
##########
@@ -0,0 +1,908 @@
+/*
+ * 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.coprocessor;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.hbase.Cell;
+import org.apache.hadoop.hbase.CellComparator;
+import org.apache.hadoop.hbase.CellUtil;
+import org.apache.hadoop.hbase.HConstants;
+import org.apache.hadoop.hbase.KeepDeletedCells;
+import org.apache.hadoop.hbase.client.ColumnFamilyDescriptor;
+import org.apache.hadoop.hbase.client.Scan;
+import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment;
+import org.apache.hadoop.hbase.regionserver.InternalScanner;
+import org.apache.hadoop.hbase.regionserver.Region;
+import org.apache.hadoop.hbase.regionserver.RegionScanner;
+import org.apache.hadoop.hbase.regionserver.ScannerContext;
+import org.apache.hadoop.hbase.regionserver.Store;
+import org.apache.hadoop.hbase.util.Bytes;
+import org.apache.phoenix.util.EnvironmentEdgeManager;
+import org.apache.phoenix.util.ScanUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import static
org.apache.phoenix.query.QueryConstants.LOCAL_INDEX_COLUMN_FAMILY_PREFIX;
+
+/**
+ * The store scanner that implements Phoenix TTL and Max Lookback. Phoenix
overrides the
+ * HBase implementation of data retention policies which is built at the cell
level, and implements
+ * its row level data retention within this store scanner.
+ */
+public class CompactionScanner implements InternalScanner {
+ private static final Logger LOGGER =
LoggerFactory.getLogger(CompactionScanner.class);
+ public static final String SEPARATOR = ":";
+ private final InternalScanner storeScanner;
+ private final Region region;
+ private final Store store;
+ private final Configuration config;
+ private final RegionCoprocessorEnvironment env;
+ private long maxLookbackWindowStart;
+ private long ttlWindowStart;
+ private long ttl;
+ private final long maxLookbackInMillis;
+ private int minVersion;
+ private int maxVersion;
+ private final boolean emptyCFStore;
+ private KeepDeletedCells keepDeletedCells;
+ private long compactionTime;
+ private final byte[] emptyCF;
+ private final byte[] emptyCQ;
+ private static Map<String, Long> maxLookbackMap = new
ConcurrentHashMap<>();
+ private PhoenixLevelRowCompactor phoenixLevelRowCompactor;
+ private HBaseLevelRowCompactor hBaseLevelRowCompactor;
+
+ public CompactionScanner(RegionCoprocessorEnvironment env,
+ Store store,
+ InternalScanner storeScanner,
+ long maxLookbackInMillis,
+ byte[] emptyCF,
+ byte[] emptyCQ) {
+ this.storeScanner = storeScanner;
+ this.region = env.getRegion();
+ this.store = store;
+ this.env = env;
+ this.emptyCF = emptyCF;
+ this.emptyCQ = emptyCQ;
+ this.config = env.getConfiguration();
+ compactionTime = EnvironmentEdgeManager.currentTimeMillis();
+ this.maxLookbackInMillis = maxLookbackInMillis;
+ String columnFamilyName = store.getColumnFamilyName();
+ String tableName = region.getRegionInfo().getTable().getNameAsString();
+ Long overriddenMaxLookback =
+ maxLookbackMap.remove(tableName + SEPARATOR +
columnFamilyName);
+ this.maxLookbackWindowStart = compactionTime - (overriddenMaxLookback
== null ?
+ maxLookbackInMillis : Math.max(maxLookbackInMillis,
overriddenMaxLookback)) - 1;
+ ColumnFamilyDescriptor cfd = store.getColumnFamilyDescriptor();
+ ttl = cfd.getTimeToLive();
+ this.ttlWindowStart = ttl == HConstants.FOREVER ? 1 : compactionTime -
ttl * 1000;
+ ttl *= 1000;
+ this.maxLookbackWindowStart = Math.max(ttlWindowStart,
maxLookbackWindowStart);
+ this.minVersion = cfd.getMinVersions();
+ this.maxVersion = cfd.getMaxVersions();
+ this.keepDeletedCells = cfd.getKeepDeletedCells();
+ emptyCFStore = region.getTableDescriptor().getColumnFamilies().length
== 1 ||
+ columnFamilyName.equals(Bytes.toString(emptyCF)) ||
+ columnFamilyName.startsWith(LOCAL_INDEX_COLUMN_FAMILY_PREFIX);
+ phoenixLevelRowCompactor = new PhoenixLevelRowCompactor();
+ hBaseLevelRowCompactor = new HBaseLevelRowCompactor();
+ }
+
+ /**
+ * Any coprocessors within a JVM can extend the max lookback window for a
column family
+ * by calling this static method.
+ */
+ public static void overrideMaxLookback(String tableName, String
columnFamilyName,
+ long maxLookbackInMillis) {
+ if (tableName == null || columnFamilyName == null) {
+ return;
+ }
+ Long old = maxLookbackMap.putIfAbsent(tableName + SEPARATOR +
columnFamilyName,
+ maxLookbackInMillis);
+ if (old != null && old < maxLookbackInMillis) {
+ maxLookbackMap.put(tableName + SEPARATOR + columnFamilyName,
maxLookbackInMillis);
+ }
+ }
+
+ @Override
+ public boolean next(List<Cell> result) throws IOException {
+ boolean hasMore = storeScanner.next(result);
+ if (!result.isEmpty()) {
+ phoenixLevelRowCompactor.compact(result, false);
+ }
+ return hasMore;
+ }
+
+ @Override
+ public boolean next(List<Cell> result, ScannerContext scannerContext)
throws IOException {
+ return next(result);
+ }
+
+ @Override
+ public void close() throws IOException {
+ storeScanner.close();
+ }
+
+ /**
+ * The context for a given row during compaction. A row may have multiple
compaction row
+ * versions. CompactionScanner uses the same row context for these
versions.
+ */
+ class RowContext {
+ Cell familyDeleteMarker = null;
+ Cell familyVersionDeleteMarker = null;
+ List<Cell> columnDeleteMarkers = null;
+ int version = 0;
+ long maxTimestamp;
+ long minTimestamp;
+ private void addColumnDeleteMarker(Cell deleteMarker) {
+ if (columnDeleteMarkers == null) {
+ columnDeleteMarkers = new ArrayList<>();
+ }
+ columnDeleteMarkers.add(deleteMarker);
+ }
+ }
+
+ /**
+ * This method finds out the maximum and minimum timestamp of the cells of
the next row
+ * version.
+ *
+ * @param columns
+ * @param rowContext
+ */
+ private void getNextRowVersionTimestamp(LinkedList<LinkedList<Cell>>
columns,
+ RowContext rowContext) {
+ rowContext.maxTimestamp = 0;
+ rowContext.minTimestamp = Long.MAX_VALUE;
+ long ts;
+ long currentDeleteFamilyTimestamp = 0;
+ long nextDeleteFamilyTimestamp = 0;
+ boolean firstColumn = true;
+ for (LinkedList<Cell> column : columns) {
+ Cell firstCell = column.getFirst();
+ ts = firstCell.getTimestamp();
+ if (ts <= nextDeleteFamilyTimestamp) {
+ continue;
+ }
+ if (firstCell.getType() == Cell.Type.DeleteFamily ||
+ firstCell.getType() == Cell.Type.DeleteFamilyVersion) {
+ if (firstColumn) {
+ // Family delete markers are always found in the first
column of a column family
+ // When Phoenix deletes a row, it places a family delete
marker in each column
+ // family with the same timestamp. We just need to process
the delete column
+ // family markers of the first column family, which would
be in the column
+ // with columnIndex=0.
+ currentDeleteFamilyTimestamp = firstCell.getTimestamp();
+ // We need to check if the next delete family marker
exits. If so, we need
+ // to record its timestamp as by definition a compaction
row version cannot
+ // cross a family delete marker
+ if (column.size() > 1) {
+ nextDeleteFamilyTimestamp =
column.get(1).getTimestamp();
+ } else {
+ nextDeleteFamilyTimestamp = 0;
+ }
+ }
+ } if (firstCell.getType() == Cell.Type.Put) {
Review Comment:
Not sure whether this is a typo wanted elseif or wanted an if on a separate
line. Logically the two separate if's stmts are correct since they cannot be
true at the same time.
##########
phoenix-core/src/main/java/org/apache/phoenix/coprocessor/TTLRegionScanner.java:
##########
@@ -0,0 +1,217 @@
+/*
+ * 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.coprocessor;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Iterator;
+import java.util.List;
+
+import org.apache.hadoop.hbase.Cell;
+import org.apache.hadoop.hbase.CellUtil;
+import org.apache.hadoop.hbase.HConstants;
+import org.apache.hadoop.hbase.client.Scan;
+import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment;
+import org.apache.hadoop.hbase.filter.PageFilter;
+import org.apache.hadoop.hbase.regionserver.RegionScanner;
+import org.apache.phoenix.query.QueryServices;
+import org.apache.phoenix.query.QueryServicesOptions;
+import org.apache.phoenix.util.EnvironmentEdgeManager;
+import org.apache.phoenix.util.ScanUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import static
org.apache.phoenix.coprocessor.BaseScannerRegionObserver.EMPTY_COLUMN_FAMILY_NAME;
+import static
org.apache.phoenix.coprocessor.BaseScannerRegionObserver.EMPTY_COLUMN_QUALIFIER_NAME;
+
+/**
+ * TTLRegionScanner masks expired rows using the empty column cell timestamp
+ */
+public class TTLRegionScanner extends BaseRegionScanner {
+ private static final Logger LOG =
+ LoggerFactory.getLogger(TTLRegionScanner.class);
+ private final boolean isPhoenixTableTTLEnabled;
+ private final RegionCoprocessorEnvironment env;
+ private Scan scan;
+ private long rowCount = 0;
+ private long pageSize = Long.MAX_VALUE;
+ long ttl;
+ long ttlWindowStart;
+ byte[] emptyCQ;
+ byte[] emptyCF;
+ private boolean initialized = false;
+
+ public TTLRegionScanner(final RegionCoprocessorEnvironment env, final Scan
scan,
+ final RegionScanner s) {
+ super(s);
+ this.env = env;
+ this.scan = scan;
+ emptyCQ = scan.getAttribute(EMPTY_COLUMN_QUALIFIER_NAME);
+ emptyCF = scan.getAttribute(EMPTY_COLUMN_FAMILY_NAME);
+ long currentTime = EnvironmentEdgeManager.currentTimeMillis();
+ ttl =
env.getRegion().getTableDescriptor().getColumnFamilies()[0].getTimeToLive();
+ ttlWindowStart = ttl == HConstants.FOREVER ? 1 : currentTime - ttl *
1000;
+ ttl *= 1000;
+ isPhoenixTableTTLEnabled = emptyCF != null && emptyCQ != null &&
Review Comment:
Logic for isPhoenixTableTTLEnabled is different here than in other classes.
I am assuming the scan attributes being set or not is to check whether the
client wants the rows masked or w/o masking/raw?
Shouldn't we separate the 2 concerns? PHOENIX_TABLE_TTL_ENABLED AND the
client enabling it?
AND maybe add more comments explaining the various cases
> Fixing TTL and Max Lookback Issues for Phoenix Tables
> -----------------------------------------------------
>
> Key: PHOENIX-6888
> URL: https://issues.apache.org/jira/browse/PHOENIX-6888
> Project: Phoenix
> Issue Type: Bug
> Affects Versions: 5.1.3
> Reporter: Kadir Ozdemir
> Assignee: Kadir Ozdemir
> Priority: Major
>
> In HBase, the unit of data is a cell and data retention rules are executed at
> the cell level. These rules are defined at the column family level. Phoenix
> leverages the data retention features of HBase and exposes them to its users
> to provide its TTL feature at the table level. However, these rules (since
> they are defined at the cell level instead of the row level) results in
> partial row retention that in turn creates data integrity issues at the
> Phoenix level.
> Similarly, Phoenix’s max lookback feature leverages HBase deleted data
> retention capabilities to preserve deleted cells within a configurable max
> lookback. This requires two data retention windows, max lookback and TTL. One
> end of these windows is the current time and the end is a moment in the past
> (i.e., current time minus the window size). Typically, the max lookback
> window is shorter than the TTL window. In the max lookback window, we would
> like to preserve the complete history of mutations regardless of how many
> cell versions these mutations generated. In the remaining TTL window outside
> the max lookback, we would like to apply the data retention rules defined
> above. However, HBase provides only one data retention window. Thus, the max
> lookback window had to be extended to become TTL window and the max lookback
> feature results in unwantedly retaining deleted data for the maximum of max
> lookback and TTL periods.
> This Jira is to fix both of these issues.
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