[
https://issues.apache.org/jira/browse/HIVE-25168?focusedWorklogId=604732&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-604732
]
ASF GitHub Bot logged work on HIVE-25168:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 01/Jun/21 19:37
Start Date: 01/Jun/21 19:37
Worklog Time Spent: 10m
Work Description: kishendas commented on a change in pull request #2324:
URL: https://github.com/apache/hive/pull/2324#discussion_r643423954
##########
File path:
storage-api/src/java/org/apache/hadoop/hive/common/MutableValidReaderWriteIdList.java
##########
@@ -0,0 +1,125 @@
+/*
+ * 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.common;
+
+import com.google.common.base.Preconditions;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.ArrayList;
+import java.util.BitSet;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+/**
+ * This class is a mutable version of {@link ValidReaderWriteIdList} for use
by an external cache layer.
+ * To use this class, we need to always mark the writeId as open before to
mark it as aborted/committed.
+ * This class is not thread safe.
+ */
+public class MutableValidReaderWriteIdList extends ValidReaderWriteIdList
implements MutableValidWriteIdList {
+ private static final Logger LOG =
LoggerFactory.getLogger(MutableValidReaderWriteIdList.class.getName());
+
+ public MutableValidReaderWriteIdList(ValidReaderWriteIdList writeIdList) {
+ super(writeIdList.writeToString());
+ exceptions = new ArrayList<>(exceptions);
+ }
+
+ @Override
+ public void addOpenWriteId(long writeId) {
+ if (writeId <= highWatermark) {
+ LOG.debug("Won't add any open write id because {} is less than or equal
to high watermark: {}",
Review comment:
Please keep the log messages shorter, as they can occupy lot of storage
space. More like ("not adding openWriteId: {} {}", writeId, highWatermark)
##########
File path:
storage-api/src/java/org/apache/hadoop/hive/common/MutableValidReaderWriteIdList.java
##########
@@ -0,0 +1,125 @@
+/*
+ * 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.common;
+
+import com.google.common.base.Preconditions;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.ArrayList;
+import java.util.BitSet;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+/**
+ * This class is a mutable version of {@link ValidReaderWriteIdList} for use
by an external cache layer.
+ * To use this class, we need to always mark the writeId as open before to
mark it as aborted/committed.
+ * This class is not thread safe.
Review comment:
What is the implication of this class not being thread safe ?
##########
File path:
storage-api/src/java/org/apache/hadoop/hive/common/MutableValidReaderWriteIdList.java
##########
@@ -0,0 +1,125 @@
+/*
+ * 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.common;
+
+import com.google.common.base.Preconditions;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.ArrayList;
+import java.util.BitSet;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+/**
+ * This class is a mutable version of {@link ValidReaderWriteIdList} for use
by an external cache layer.
+ * To use this class, we need to always mark the writeId as open before to
mark it as aborted/committed.
+ * This class is not thread safe.
+ */
+public class MutableValidReaderWriteIdList extends ValidReaderWriteIdList
implements MutableValidWriteIdList {
Review comment:
Can you add a comment on why we need this class ? More like why an
external cache layer wants to use this class.
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Issue Time Tracking
-------------------
Worklog Id: (was: 604732)
Time Spent: 0.5h (was: 20m)
> Add mutable validWriteIdList
> ----------------------------
>
> Key: HIVE-25168
> URL: https://issues.apache.org/jira/browse/HIVE-25168
> Project: Hive
> Issue Type: New Feature
> Components: storage-api
> Reporter: Yu-Wen Lai
> Assignee: Yu-Wen Lai
> Priority: Major
> Labels: pull-request-available
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> Although the current implementation for validWriteIdList is not strictly
> immutable, it is in some sense to provide a read-only view snapshot. This
> change is to add another class to provide functionalities for manipulating
> the writeIdList. We could use this to keep writeIdList up-to-date in an
> external cache layer for event-based metadata refreshing.
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