[
https://issues.apache.org/jira/browse/HIVE-24918?focusedWorklogId=624209&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-624209
]
ASF GitHub Bot logged work on HIVE-24918:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 19/Jul/21 08:02
Start Date: 19/Jul/21 08:02
Worklog Time Spent: 10m
Work Description: pkumarsinha commented on a change in pull request #2121:
URL: https://github.com/apache/hive/pull/2121#discussion_r672075244
##########
File path:
ql/src/java/org/apache/hadoop/hive/ql/parse/repl/load/FailoverMetaData.java
##########
@@ -0,0 +1,207 @@
+/*
+ * 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.hadoop.hive.ql.parse.repl.load;
+
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.apache.hadoop.hive.conf.HiveConf;
+import org.apache.hadoop.hive.ql.parse.SemanticException;
+import org.apache.hadoop.hive.ql.parse.repl.dump.Utils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.List;
+
+@JsonIgnoreProperties(ignoreUnknown = true)
+public class FailoverMetaData {
+ public static final String FAILOVER_METADATA = "_failovermetadata";
+ private static final Logger LOG =
LoggerFactory.getLogger(FailoverMetaData.class);
+
+ private static ObjectMapper JSON_OBJECT_MAPPER = new ObjectMapper();
+
+ @JsonProperty
+ private Long failoverEventId = null;
+ @JsonProperty
+ private Long cursorPoint = null;
+ @JsonProperty
+ private List<Long> abortedTxns;
+ @JsonProperty
+ private List<Long> openTxns;
+ @JsonProperty
+ private List<Long> txnsWithoutLock;
+
+ @JsonIgnore
+ private boolean initialized = false;
+ @JsonIgnore
+ private final Path dumpFile;
+ @JsonIgnore
+ private final HiveConf hiveConf;
+
+ public FailoverMetaData() {
+ //to be instantiated by JSON ObjectMapper.
+ dumpFile = null;
+ hiveConf = null;
Review comment:
by default these are null
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Issue Time Tracking
-------------------
Worklog Id: (was: 624209)
Time Spent: 5h (was: 4h 50m)
> Handle failover case during Repl Dump
> -------------------------------------
>
> Key: HIVE-24918
> URL: https://issues.apache.org/jira/browse/HIVE-24918
> Project: Hive
> Issue Type: New Feature
> Reporter: Haymant Mangla
> Assignee: Haymant Mangla
> Priority: Major
> Labels: pull-request-available
> Time Spent: 5h
> Remaining Estimate: 0h
>
> To handle:
> a) Whenever user wants to go ahead with failover, during the next or
> subsequent repl dump operation upon confirming that there are no pending open
> transaction events, It should create a _failover_ready marker file in the
> dump dir. This marker file would contain scheduled query name
> that has generated this dump.
> b) Skip next repl dump instances once we have the marker file placed.
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