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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Work logged] (HDDS-1366) Add ability in Recon to track the number of small files in an Ozone cluster.
Date Mon, 29 Jul 2019 18:54:00 GMT

     [ https://issues.apache.org/jira/browse/HDDS-1366?focusedWorklogId=284475&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-284475

ASF GitHub Bot logged work on HDDS-1366:

                Author: ASF GitHub Bot
            Created on: 29/Jul/19 18:53
            Start Date: 29/Jul/19 18:53
    Worklog Time Spent: 10m 
      Work Description: avijayanhwx commented on pull request #1146: HDDS-1366. Add ability
in Recon to track the number of small files in an Ozone Cluster
URL: https://github.com/apache/hadoop/pull/1146#discussion_r308378424

 File path: hadoop-ozone/ozone-recon/src/main/java/org/apache/hadoop/ozone/recon/api/UtilizationService.java
 @@ -0,0 +1,65 @@
+ * 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.recon.api;
+import javax.inject.Inject;
+import org.hadoop.ozone.recon.schema.tables.daos.FileCountBySizeDao;
+import org.hadoop.ozone.recon.schema.tables.pojos.FileCountBySize;
+import org.jooq.Configuration;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+import javax.ws.rs.Produces;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+ * Endpoint for querying the counts of a certain file Size.
+ */
+public class UtilizationService {
+ private static final Logger LOG =
+     LoggerFactory.getLogger(UtilizationService.class);
+ @Inject
+  private Configuration sqlConfiguration ;
+  /**
+   * Return the file counts from Recon DB.
+   * @return {@link Response}
+   */
+  @GET
+  @Path("/fileCount")
+  public Response getFileCounts() {
+    FileCountBySizeDao fileCountBySizeDao = new FileCountBySizeDao(sqlConfiguration);
+    List<FileCountBySize> resultSet = fileCountBySizeDao.findAll();
+    Map<Long, Long> fileSizeCountResponseMap = new LinkedHashMap<>();
 Review comment:
   Nit. We are relying on table row order here. If we want to make sure we always return the
data in sorted size order, a TreeMap may be better.
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Issue Time Tracking

    Worklog Id:     (was: 284475)
    Time Spent: 3h 40m  (was: 3.5h)

> Add ability in Recon to track the number of small files in an Ozone cluster.
> ----------------------------------------------------------------------------
>                 Key: HDDS-1366
>                 URL: https://issues.apache.org/jira/browse/HDDS-1366
>             Project: Hadoop Distributed Data Store
>          Issue Type: Sub-task
>          Components: Ozone Recon
>            Reporter: Aravindan Vijayan
>            Assignee: Shweta
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 0.4.1
>          Time Spent: 3h 40m
>  Remaining Estimate: 0h
> Ozone users may want to track the number of small files they have in their cluster and
where they are present. Recon can help them with the information by iterating the OM Key Table
and dividing the keys into different buckets based on the data size. 

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