HBASE-15475 Allow TimestampsFilter to provide a seek hint
This commit is contained in:
Elliott Clark
parent
a3d550fbca
commit
604415e827
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@ -19,16 +19,18 @@ package org.apache.hadoop.hbase.filter;
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import com.google.common.base.Preconditions;
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import com.google.protobuf.InvalidProtocolBufferException;
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import org.apache.hadoop.hbase.classification.InterfaceAudience;
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import org.apache.hadoop.hbase.classification.InterfaceStability;
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import org.apache.hadoop.hbase.Cell;
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import org.apache.hadoop.hbase.exceptions.DeserializationException;
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import org.apache.hadoop.hbase.protobuf.generated.FilterProtos;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.TreeSet;
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import org.apache.hadoop.hbase.Cell;
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import org.apache.hadoop.hbase.KeyValueUtil;
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import org.apache.hadoop.hbase.classification.InterfaceAudience;
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import org.apache.hadoop.hbase.classification.InterfaceStability;
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import org.apache.hadoop.hbase.exceptions.DeserializationException;
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import org.apache.hadoop.hbase.protobuf.generated.FilterProtos;
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/**
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* Filter that returns only cells whose timestamp (version) is
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* in the specified list of timestamps (versions).
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@ -42,6 +44,7 @@ import java.util.TreeSet;
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@InterfaceStability.Stable
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public class TimestampsFilter extends FilterBase {
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private final boolean canHint;
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TreeSet<Long> timestamps;
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private static final int MAX_LOG_TIMESTAMPS = 5;
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@ -49,17 +52,30 @@ public class TimestampsFilter extends FilterBase {
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// once the timestamps fall below the minTimeStamp.
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long minTimeStamp = Long.MAX_VALUE;
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/**
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* Constructor for filter that retains only the specified timestamps in the list.
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* @param timestamps
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*/
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public TimestampsFilter(List<Long> timestamps) {
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this(timestamps, false);
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}
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/**
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* Constructor for filter that retains only those
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* cells whose timestamp (version) is in the specified
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* list of timestamps.
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*
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* @param timestamps
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* @param timestamps list of timestamps that are wanted.
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* @param canHint should the filter provide a seek hint? This can skip
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* past delete tombstones, so it should only be used when that
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* is not an issue ( no deletes, or don't care if data
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* becomes visible)
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*/
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public TimestampsFilter(List<Long> timestamps) {
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public TimestampsFilter(List<Long> timestamps, boolean canHint) {
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for (Long timestamp : timestamps) {
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Preconditions.checkArgument(timestamp >= 0, "must be positive %s", timestamp);
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}
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this.canHint = canHint;
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this.timestamps = new TreeSet<Long>(timestamps);
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init();
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}
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@ -96,7 +112,41 @@ public class TimestampsFilter extends FilterBase {
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// to be lesser than all of the other values.
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return ReturnCode.NEXT_COL;
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}
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return ReturnCode.SKIP;
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return canHint ? ReturnCode.SEEK_NEXT_USING_HINT : ReturnCode.SKIP;
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}
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/**
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* Pick the next cell that the scanner should seek to. Since this can skip any number of cells
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* any of which can be a delete this can resurect old data.
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*
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* The method will only be used if canHint was set to true while creating the filter.
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*
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* @throws IOException This will never happen.
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*/
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public Cell getNextCellHint(Cell currentCell) throws IOException {
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if (!canHint) {
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return null;
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}
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Long nextTimestampObject = timestamps.lower(currentCell.getTimestamp());
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if (nextTimestampObject == null) {
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// This should only happen if the current column's
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// timestamp is below the last one in the list.
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//
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// It should never happen as the filterKeyValue should return NEXT_COL
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// but it's always better to be extra safe and protect against future
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// behavioral changes.
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return KeyValueUtil.createLastOnRowCol(currentCell);
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}
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// Since we know the nextTimestampObject isn't null here there must still be
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// timestamps that can be included. Cast the Long to a long and return the
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// a cell with the current row/cf/col and the next found timestamp.
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long nextTimestamp = nextTimestampObject;
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return KeyValueUtil.createFirstOnRowColTS(currentCell, nextTimestamp);
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}
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// Override here explicitly as the method in super class FilterBase might do a KeyValue recreate.
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@ -118,20 +168,21 @@ public class TimestampsFilter extends FilterBase {
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/**
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* @return The filter serialized using pb
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*/
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public byte [] toByteArray() {
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public byte[] toByteArray() {
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FilterProtos.TimestampsFilter.Builder builder =
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FilterProtos.TimestampsFilter.newBuilder();
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builder.addAllTimestamps(this.timestamps);
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builder.setCanHint(canHint);
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return builder.build().toByteArray();
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}
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/**
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* @param pbBytes A pb serialized {@link TimestampsFilter} instance
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*
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* @return An instance of {@link TimestampsFilter} made from <code>bytes</code>
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* @throws DeserializationException
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* @see #toByteArray
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*/
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public static TimestampsFilter parseFrom(final byte [] pbBytes)
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public static TimestampsFilter parseFrom(final byte[] pbBytes)
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throws DeserializationException {
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FilterProtos.TimestampsFilter proto;
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try {
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@ -139,7 +190,8 @@ public class TimestampsFilter extends FilterBase {
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} catch (InvalidProtocolBufferException e) {
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throw new DeserializationException(e);
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}
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return new TimestampsFilter(proto.getTimestampsList());
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return new TimestampsFilter(proto.getTimestampsList(),
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proto.hasCanHint() && proto.getCanHint());
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}
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/**
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@ -175,7 +227,7 @@ public class TimestampsFilter extends FilterBase {
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}
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}
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return String.format("%s (%d/%d): [%s]", this.getClass().getSimpleName(),
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count, this.timestamps.size(), tsList.toString());
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return String.format("%s (%d/%d): [%s] canHint: [%b]", this.getClass().getSimpleName(),
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count, this.timestamps.size(), tsList.toString(), canHint);
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}
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}
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@ -13923,6 +13923,16 @@ public final class FilterProtos {
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* <code>repeated int64 timestamps = 1 [packed = true];</code>
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*/
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long getTimestamps(int index);
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// optional bool can_hint = 2;
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/**
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* <code>optional bool can_hint = 2;</code>
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*/
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boolean hasCanHint();
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/**
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* <code>optional bool can_hint = 2;</code>
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*/
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boolean getCanHint();
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}
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/**
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* Protobuf type {@code hbase.pb.TimestampsFilter}
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@ -13996,6 +14006,11 @@ public final class FilterProtos {
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input.popLimit(limit);
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break;
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}
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case 16: {
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bitField0_ |= 0x00000001;
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canHint_ = input.readBool();
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break;
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}
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}
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}
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} catch (com.google.protobuf.InvalidProtocolBufferException e) {
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@ -14038,6 +14053,7 @@ public final class FilterProtos {
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return PARSER;
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}
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private int bitField0_;
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// repeated int64 timestamps = 1 [packed = true];
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public static final int TIMESTAMPS_FIELD_NUMBER = 1;
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private java.util.List<java.lang.Long> timestamps_;
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@ -14062,8 +14078,25 @@ public final class FilterProtos {
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}
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private int timestampsMemoizedSerializedSize = -1;
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// optional bool can_hint = 2;
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public static final int CAN_HINT_FIELD_NUMBER = 2;
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private boolean canHint_;
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/**
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* <code>optional bool can_hint = 2;</code>
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*/
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public boolean hasCanHint() {
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return ((bitField0_ & 0x00000001) == 0x00000001);
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}
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/**
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* <code>optional bool can_hint = 2;</code>
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*/
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public boolean getCanHint() {
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return canHint_;
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}
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private void initFields() {
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timestamps_ = java.util.Collections.emptyList();
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canHint_ = false;
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}
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private byte memoizedIsInitialized = -1;
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public final boolean isInitialized() {
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@ -14084,6 +14117,9 @@ public final class FilterProtos {
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for (int i = 0; i < timestamps_.size(); i++) {
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output.writeInt64NoTag(timestamps_.get(i));
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}
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if (((bitField0_ & 0x00000001) == 0x00000001)) {
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output.writeBool(2, canHint_);
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}
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getUnknownFields().writeTo(output);
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}
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@ -14107,6 +14143,10 @@ public final class FilterProtos {
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}
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timestampsMemoizedSerializedSize = dataSize;
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}
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if (((bitField0_ & 0x00000001) == 0x00000001)) {
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size += com.google.protobuf.CodedOutputStream
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.computeBoolSize(2, canHint_);
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}
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size += getUnknownFields().getSerializedSize();
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memoizedSerializedSize = size;
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return size;
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@ -14132,6 +14172,11 @@ public final class FilterProtos {
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boolean result = true;
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result = result && getTimestampsList()
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.equals(other.getTimestampsList());
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result = result && (hasCanHint() == other.hasCanHint());
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if (hasCanHint()) {
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result = result && (getCanHint()
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== other.getCanHint());
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}
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result = result &&
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getUnknownFields().equals(other.getUnknownFields());
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return result;
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@ -14149,6 +14194,10 @@ public final class FilterProtos {
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hash = (37 * hash) + TIMESTAMPS_FIELD_NUMBER;
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hash = (53 * hash) + getTimestampsList().hashCode();
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}
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if (hasCanHint()) {
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hash = (37 * hash) + CAN_HINT_FIELD_NUMBER;
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hash = (53 * hash) + hashBoolean(getCanHint());
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}
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hash = (29 * hash) + getUnknownFields().hashCode();
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memoizedHashCode = hash;
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return hash;
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@ -14260,6 +14309,8 @@ public final class FilterProtos {
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super.clear();
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timestamps_ = java.util.Collections.emptyList();
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bitField0_ = (bitField0_ & ~0x00000001);
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canHint_ = false;
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bitField0_ = (bitField0_ & ~0x00000002);
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return this;
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}
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@ -14287,11 +14338,17 @@ public final class FilterProtos {
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public org.apache.hadoop.hbase.protobuf.generated.FilterProtos.TimestampsFilter buildPartial() {
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org.apache.hadoop.hbase.protobuf.generated.FilterProtos.TimestampsFilter result = new org.apache.hadoop.hbase.protobuf.generated.FilterProtos.TimestampsFilter(this);
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int from_bitField0_ = bitField0_;
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int to_bitField0_ = 0;
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if (((bitField0_ & 0x00000001) == 0x00000001)) {
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timestamps_ = java.util.Collections.unmodifiableList(timestamps_);
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bitField0_ = (bitField0_ & ~0x00000001);
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}
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result.timestamps_ = timestamps_;
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if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
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to_bitField0_ |= 0x00000001;
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}
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result.canHint_ = canHint_;
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result.bitField0_ = to_bitField0_;
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onBuilt();
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return result;
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}
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@ -14317,6 +14374,9 @@ public final class FilterProtos {
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}
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onChanged();
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}
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if (other.hasCanHint()) {
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setCanHint(other.getCanHint());
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}
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this.mergeUnknownFields(other.getUnknownFields());
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return this;
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}
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@ -14410,6 +14470,39 @@ public final class FilterProtos {
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return this;
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}
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// optional bool can_hint = 2;
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private boolean canHint_ ;
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/**
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* <code>optional bool can_hint = 2;</code>
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*/
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public boolean hasCanHint() {
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return ((bitField0_ & 0x00000002) == 0x00000002);
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}
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/**
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* <code>optional bool can_hint = 2;</code>
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*/
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public boolean getCanHint() {
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return canHint_;
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}
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/**
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* <code>optional bool can_hint = 2;</code>
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*/
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public Builder setCanHint(boolean value) {
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bitField0_ |= 0x00000002;
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canHint_ = value;
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onChanged();
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return this;
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}
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/**
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* <code>optional bool can_hint = 2;</code>
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*/
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public Builder clearCanHint() {
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bitField0_ = (bitField0_ & ~0x00000002);
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canHint_ = false;
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onChanged();
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return this;
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}
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// @@protoc_insertion_point(builder_scope:hbase.pb.TimestampsFilter)
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}
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@ -17503,18 +17596,18 @@ public final class FilterProtos {
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"ompareType\022(\n\ncomparator\030\004 \002(\0132\024.hbase.p" +
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"b.Comparator\022\031\n\021filter_if_missing\030\005 \001(\010\022" +
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"\033\n\023latest_version_only\030\006 \001(\010\".\n\nSkipFilt" +
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"er\022 \n\006filter\030\001 \002(\0132\020.hbase.pb.Filter\"*\n\020" +
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"er\022 \n\006filter\030\001 \002(\0132\020.hbase.pb.Filter\"<\n\020" +
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"TimestampsFilter\022\026\n\ntimestamps\030\001 \003(\003B\002\020\001" +
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"\">\n\013ValueFilter\022/\n\016compare_filter\030\001 \002(\0132" +
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"\027.hbase.pb.CompareFilter\"4\n\020WhileMatchFi" +
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"lter\022 \n\006filter\030\001 \002(\0132\020.hbase.pb.Filter\"\021" +
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"\n\017FilterAllFilter\"h\n\010RowRange\022\021\n\tstart_r",
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"ow\030\001 \001(\014\022\033\n\023start_row_inclusive\030\002 \001(\010\022\020\n" +
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"\010stop_row\030\003 \001(\014\022\032\n\022stop_row_inclusive\030\004 " +
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"\001(\010\"A\n\023MultiRowRangeFilter\022*\n\016row_range_" +
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"list\030\001 \003(\0132\022.hbase.pb.RowRangeBB\n*org.ap" +
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"ache.hadoop.hbase.protobuf.generatedB\014Fi" +
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"lterProtosH\001\210\001\001\240\001\001"
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"\022\020\n\010can_hint\030\002 \001(\010\">\n\013ValueFilter\022/\n\016com" +
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"pare_filter\030\001 \002(\0132\027.hbase.pb.CompareFilt" +
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"er\"4\n\020WhileMatchFilter\022 \n\006filter\030\001 \002(\0132\020" +
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".hbase.pb.Filter\"\021\n\017FilterAllFilter\"h\n\010R",
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"owRange\022\021\n\tstart_row\030\001 \001(\014\022\033\n\023start_row_" +
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"inclusive\030\002 \001(\010\022\020\n\010stop_row\030\003 \001(\014\022\032\n\022sto" +
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"p_row_inclusive\030\004 \001(\010\"A\n\023MultiRowRangeFi" +
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"lter\022*\n\016row_range_list\030\001 \003(\0132\022.hbase.pb." +
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"RowRangeBB\n*org.apache.hadoop.hbase.prot" +
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"obuf.generatedB\014FilterProtosH\001\210\001\001\240\001\001"
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};
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com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner assigner =
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new com.google.protobuf.Descriptors.FileDescriptor.InternalDescriptorAssigner() {
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@ -17670,7 +17763,7 @@ public final class FilterProtos {
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internal_static_hbase_pb_TimestampsFilter_fieldAccessorTable = new
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com.google.protobuf.GeneratedMessage.FieldAccessorTable(
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internal_static_hbase_pb_TimestampsFilter_descriptor,
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new java.lang.String[] { "Timestamps", });
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new java.lang.String[] { "Timestamps", "CanHint", });
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internal_static_hbase_pb_ValueFilter_descriptor =
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getDescriptor().getMessageTypes().get(25);
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internal_static_hbase_pb_ValueFilter_fieldAccessorTable = new
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@ -146,6 +146,7 @@ message SkipFilter {
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message TimestampsFilter {
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repeated int64 timestamps = 1 [packed=true];
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optional bool can_hint = 2;
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}
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message ValueFilter {
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@ -0,0 +1,106 @@
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/*
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*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.hadoop.hbase.regionserver;
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import java.io.IOException;
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import com.google.common.collect.ImmutableList;
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import org.apache.commons.lang.RandomStringUtils;
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import org.apache.hadoop.hbase.HBaseTestingUtility;
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import org.apache.hadoop.hbase.HColumnDescriptor;
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import org.apache.hadoop.hbase.client.Get;
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import org.apache.hadoop.hbase.client.Put;
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import org.apache.hadoop.hbase.filter.TimestampsFilter;
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import org.apache.hadoop.hbase.testclassification.LargeTests;
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import org.apache.hadoop.hbase.testclassification.RegionServerTests;
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import org.apache.hadoop.hbase.util.Bytes;
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import org.junit.Before;
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import org.junit.Test;
|
||||
import org.junit.experimental.categories.Category;
|
||||
|
||||
import static org.junit.Assert.assertTrue;
|
||||
|
||||
@Category({RegionServerTests.class, LargeTests.class})
|
||||
public class TestTimestampFilterSeekHint {
|
||||
|
||||
private final static HBaseTestingUtility TEST_UTIL = HBaseTestingUtility.createLocalHTU();
|
||||
private final static String RK = "myRK";
|
||||
private final static byte[] RK_BYTES = Bytes.toBytes(RK);
|
||||
|
||||
private final static String FAMILY = "D";
|
||||
private final static byte[] FAMILY_BYTES = Bytes.toBytes(FAMILY);
|
||||
|
||||
private final static String QUAL = "0";
|
||||
private final static byte[] QUAL_BYTES = Bytes.toBytes(QUAL);
|
||||
|
||||
public static final int MAX_VERSIONS = 50000;
|
||||
private HRegion region;
|
||||
private int regionCount = 0;
|
||||
|
||||
@Test
|
||||
public void testGetSeek() throws IOException {
|
||||
StoreFileScanner.instrument();
|
||||
prepareRegion();
|
||||
|
||||
Get g = new Get(RK_BYTES);
|
||||
final TimestampsFilter timestampsFilter = new TimestampsFilter(ImmutableList.of(5L), true);
|
||||
g.setFilter(timestampsFilter);
|
||||
final long initialSeekCount = StoreFileScanner.getSeekCount();
|
||||
region.get(g);
|
||||
final long finalSeekCount = StoreFileScanner.getSeekCount();
|
||||
|
||||
/*
|
||||
Make sure there's more than one.
|
||||
Aka one seek to get to the row, and one to get to the time.
|
||||
*/
|
||||
assertTrue(finalSeekCount >= initialSeekCount + 3 );
|
||||
}
|
||||
|
||||
@Test
|
||||
public void testGetDoesntSeekWithNoHint() throws IOException {
|
||||
StoreFileScanner.instrument();
|
||||
prepareRegion();
|
||||
|
||||
Get g = new Get(RK_BYTES);
|
||||
g.setFilter(new TimestampsFilter(ImmutableList.of(5L)));
|
||||
final long initialSeekCount = StoreFileScanner.getSeekCount();
|
||||
region.get(g);
|
||||
final long finalSeekCount = StoreFileScanner.getSeekCount();
|
||||
|
||||
assertTrue(finalSeekCount >= initialSeekCount );
|
||||
assertTrue(finalSeekCount < initialSeekCount + 3);
|
||||
}
|
||||
|
||||
@Before
|
||||
public void prepareRegion() throws IOException {
|
||||
region =
|
||||
TEST_UTIL.createTestRegion("TestTimestampFilterSeekHint" + regionCount++,
|
||||
new HColumnDescriptor(FAMILY)
|
||||
.setBlocksize(1024)
|
||||
.setMaxVersions(MAX_VERSIONS)
|
||||
);
|
||||
|
||||
for (long i = 0; i <MAX_VERSIONS - 2; i++) {
|
||||
Put p = new Put(RK_BYTES, i);
|
||||
p.addColumn(FAMILY_BYTES, QUAL_BYTES, Bytes.toBytes(RandomStringUtils.randomAlphabetic(255)));
|
||||
region.put(p);
|
||||
}
|
||||
region.flush(true);
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue