[
https://issues.apache.org/jira/browse/FLINK-2055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15418455#comment-15418455
]
ASF GitHub Bot commented on FLINK-2055:
---------------------------------------
Github user ramkrish86 commented on a diff in the pull request:
https://github.com/apache/flink/pull/2332#discussion_r74549919
--- Diff:
flink-streaming-connectors/flink-connector-hbase/src/main/java/org/apache/flink/streaming/connectors/hbase/MutationActionList.java
---
@@ -0,0 +1,371 @@
+/*
+ * 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.flink.streaming.connectors.hbase;
+
+import org.apache.flink.util.Preconditions;
+import org.apache.hadoop.hbase.client.Append;
+import org.apache.hadoop.hbase.client.Delete;
+import org.apache.hadoop.hbase.client.Durability;
+import org.apache.hadoop.hbase.client.Increment;
+import org.apache.hadoop.hbase.client.Mutation;
+import org.apache.hadoop.hbase.client.Put;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * This class represents a list of {@link MutationAction}s you will take
when writing
+ * an input value of {@link HBaseSink} to a row in a HBase table.
+ * Each {@link MutationAction} can create an HBase {@link Mutation}
operation type
+ * including {@link Put}, {@link Increment}, {@link Append} and {@link
Delete}.
+ */
+public class MutationActionList {
+ private final List<MutationAction> actions;
+
+ public MutationActionList() {
+ this.actions = new ArrayList<>();
+ }
+
+ public List<MutationAction> getActions() {
+ return this.actions;
+ }
+
+ /**
+ * Create a new list of HBase {@link Mutation}s.
+ *
+ * @param rowKey row that the created {@link Mutation} list is applied
to
+ * @param writeToWAL enable WAL
+ * @return a list of HBase {@link Mutation}s
+ */
+ public List<Mutation> newMutationList(byte[] rowKey, boolean
writeToWAL) {
+ List<Mutation> mutations = new ArrayList<>();
+ Put put = null;
+ Increment increment = null;
+ Append append = null;
+ Delete delete = null;
+ boolean rowIsDeleted = false;
+ for (MutationAction action : actions) {
+ switch (action.getType()) {
+ case PUT:
+ if (put == null) {
+ put = new Put(rowKey);
+ mutations.add(put);
+ }
+ if (action.getTs() == -1) {
+
put.addColumn(action.getFamily(), action.getQualifier(), action.getValue());
+ } else {
+
put.addColumn(action.getFamily(), action.getQualifier(), action.getTs(),
action.getValue());
+ }
+ break;
+
+ case INCREMENT:
+ if (increment == null) {
+ increment = new
Increment(rowKey);
+ mutations.add(increment);
+ }
+ increment.addColumn(action.getFamily(),
action.getQualifier(), action.getIncrement());
+ break;
+
+ case APPEND:
+ if (append == null) {
+ append = new Append(rowKey);
+ mutations.add(append);
+ }
+ append.add(action.getFamily(),
action.getQualifier(), action.getValue());
+ break;
+
+ // If there are multiple DELETE_ROW actions,
only the first one is served
+ case DELETE_ROW:
+ if (!rowIsDeleted) {
+ for (int i = 0; i <
mutations.size(); ) {
+ if (mutations.get(i)
instanceof Delete) {
+
mutations.remove(i);
+ } else {
+ i++;
+ }
+ }
+ delete = new Delete(rowKey,
action.getTs());
+ mutations.add(delete);
+ rowIsDeleted = true;
+ }
+ break;
+
+ case DELETE_FAMILY:
+ if (!rowIsDeleted) {
+ if (delete == null) {
+ delete = new
Delete(rowKey);
+ mutations.add(delete);
+ }
+
delete.addFamily(action.getFamily(), action.getTs());
+ }
+ break;
+
+ case DELETE_COLUMNS:
+ if (!rowIsDeleted) {
+ if (delete == null) {
+ delete = new
Delete(rowKey);
+ mutations.add(delete);
+ }
+
delete.addColumns(action.getFamily(), action.getQualifier(), action.getTs());
+ }
+ break;
+
+ case DELETE_COLUMN:
+ if (!rowIsDeleted) {
+ if (delete == null) {
+ delete = new
Delete(rowKey);
+ mutations.add(delete);
+ }
+
delete.addColumn(action.getFamily(), action.getQualifier(), action.getTs());
--- End diff --
if action.getTs()== -1 then you can call delete.addColumn(byte[] fam,
byte[] qual) so that latest version of the specified column can be removed. But
for all the above you may have to add so many enums. May be you can check with
the Flink community as to how to proceed here. Should we add all the delete
related support here or can be done in this JIRA only.
> Implement Streaming HBaseSink
> -----------------------------
>
> Key: FLINK-2055
> URL: https://issues.apache.org/jira/browse/FLINK-2055
> Project: Flink
> Issue Type: New Feature
> Components: Streaming, Streaming Connectors
> Affects Versions: 0.9
> Reporter: Robert Metzger
> Assignee: Hilmi Yildirim
>
> As per :
> http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Write-Stream-to-HBase-td1300.html
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
