[
https://issues.apache.org/jira/browse/HDDS-1731?focusedWorklogId=271343&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-271343
]
ASF GitHub Bot logged work on HDDS-1731:
----------------------------------------
Author: ASF GitHub Bot
Created on: 03/Jul/19 03:17
Start Date: 03/Jul/19 03:17
Worklog Time Spent: 10m
Work Description: arp7 commented on pull request #1044: HDDS-1731.
Implement File CreateFile Request to use Cache and DoubleBuffer.
URL: https://github.com/apache/hadoop/pull/1044#discussion_r299762127
##########
File path:
hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/request/file/OMFileCreateRequest.java
##########
@@ -0,0 +1,348 @@
+/**
+ * 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
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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.ozone.om.request.file;
+
+import java.io.IOException;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+import javax.annotation.Nonnull;
+
+import com.google.common.base.Preconditions;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import org.apache.hadoop.fs.FileEncryptionInfo;
+import org.apache.hadoop.hdds.protocol.proto.HddsProtos;
+import org.apache.hadoop.hdds.scm.container.common.helpers.ExcludeList;
+import org.apache.hadoop.ozone.audit.OMAction;
+import org.apache.hadoop.ozone.om.OMMetadataManager;
+import org.apache.hadoop.ozone.om.OMMetrics;
+import org.apache.hadoop.ozone.om.OzoneManager;
+import org.apache.hadoop.ozone.om.exceptions.OMException;
+import org.apache.hadoop.ozone.om.helpers.OmBucketInfo;
+import org.apache.hadoop.ozone.om.helpers.OmKeyInfo;
+import org.apache.hadoop.ozone.om.helpers.OmKeyLocationInfo;
+import org.apache.hadoop.ozone.om.request.key.OMKeyCreateRequest;
+import org.apache.hadoop.ozone.om.request.key.OMKeyRequest;
+import org.apache.hadoop.ozone.om.response.OMClientResponse;
+import org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos
+ .CreateFileRequest;
+import org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos
+ .KeyArgs;
+import org.apache.hadoop.ozone.protocol.proto.OzoneManagerProtocolProtos
+ .OMRequest;
+import org.apache.hadoop.ozone.security.acl.IAccessAuthorizer;
+import org.apache.hadoop.ozone.security.acl.OzoneObj;
+import org.apache.hadoop.util.Time;
+import org.apache.hadoop.utils.UniqueId;
+import org.apache.hadoop.utils.db.Table;
+import org.apache.hadoop.utils.db.TableIterator;
+import org.apache.hadoop.utils.db.cache.CacheKey;
+import org.apache.hadoop.utils.db.cache.CacheValue;
+
+
+import static
org.apache.hadoop.ozone.om.request.file.OMFileRequest.OMDirectoryResult.DIRECTORY_EXISTS;
+import static
org.apache.hadoop.ozone.om.request.file.OMFileRequest.OMDirectoryResult.DIRECTORY_EXISTS_IN_GIVENPATH;
+import static
org.apache.hadoop.ozone.om.request.file.OMFileRequest.OMDirectoryResult.FILE_EXISTS_IN_GIVENPATH;
+import static
org.apache.hadoop.ozone.om.request.file.OMFileRequest.OMDirectoryResult.FILE_EXISTS;
+import static
org.apache.hadoop.ozone.om.lock.OzoneManagerLock.Resource.BUCKET_LOCK;
+import static
org.apache.hadoop.ozone.om.request.file.OMFileRequest.OMDirectoryResult.NONE;
+
+/**
+ * Handles create file request.
+ */
+public class OMFileCreateRequest extends OMKeyCreateRequest
+ implements OMKeyRequest {
+
+ private static final Logger LOG =
+ LoggerFactory.getLogger(OMFileCreateRequest.class);
+ public OMFileCreateRequest(OMRequest omRequest) {
+ super(omRequest);
+ }
+
+
+ @Override
+ public OMRequest preExecute(OzoneManager ozoneManager) throws IOException {
+ CreateFileRequest createFileRequest =
getOmRequest().getCreateFileRequest();
+ Preconditions.checkNotNull(createFileRequest);
+
+ KeyArgs keyArgs = createFileRequest.getKeyArgs();
+
+ if (keyArgs.getKeyName().length() == 0) {
+ // Check if this is the root of the filesystem.
+ // Not throwing exception here, as need to throw exception after
+ // checking volume/bucket exists.
+ return getOmRequest().toBuilder().setUserInfo(getUserInfo()).build();
+ }
+
+ long scmBlockSize = ozoneManager.getScmBlockSize();
+
+ // NOTE size of a key is not a hard limit on anything, it is a value that
Review comment:
This comment is a little unclear. Could you please clarify?
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Issue Time Tracking
-------------------
Worklog Id: (was: 271343)
Time Spent: 3h 20m (was: 3h 10m)
> Implement File CreateFile Request to use Cache and DoubleBuffer
> ---------------------------------------------------------------
>
> Key: HDDS-1731
> URL: https://issues.apache.org/jira/browse/HDDS-1731
> Project: Hadoop Distributed Data Store
> Issue Type: Sub-task
> Reporter: Bharat Viswanadham
> Assignee: Bharat Viswanadham
> Priority: Major
> Labels: pull-request-available
> Time Spent: 3h 20m
> Remaining Estimate: 0h
>
> In this Jira, we shall implement createFile request according to the HA
> model, and use cache and double buffer.
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