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https://issues.apache.org/jira/browse/DRILL-6053?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16398468#comment-16398468
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ASF GitHub Bot commented on DRILL-6053:
---------------------------------------
Github user arina-ielchiieva commented on a diff in the pull request:
https://github.com/apache/drill/pull/1163#discussion_r174431372
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/store/sys/Store.java ---
@@ -0,0 +1,54 @@
+/*
+ * 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.drill.exec.store.sys;
+
+import java.util.Iterator;
+import java.util.Map;
+
+public interface Store<V> extends AutoCloseable
+{
--- End diff --
Please move to upper line.
> Avoid excessive locking in LocalPersistentStore
> -----------------------------------------------
>
> Key: DRILL-6053
> URL: https://issues.apache.org/jira/browse/DRILL-6053
> Project: Apache Drill
> Issue Type: Improvement
> Reporter: Vlad Rozov
> Assignee: Vlad Rozov
> Priority: Major
> Fix For: 1.14.0
>
>
> When query profiles are written to LocalPersistentStore, the write is
> unnecessary serialized due to read/write lock that was introduced for
> versioned PersistentStore. Only versioned access needs to be protected by
> read/write lock.
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