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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-10002) WebUI shows logs unfriendly, especially when the amount of logs is large
Date Fri, 19 Oct 2018 07:51:06 GMT

    [ https://issues.apache.org/jira/browse/FLINK-10002?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16656402#comment-16656402
] 

ASF GitHub Bot commented on FLINK-10002:
----------------------------------------

ifndef-SleePy commented on a change in pull request #6770:  [FLINK-10002] [Webfrontend] WebUI
shows jm/tm logs more friendly.
URL: https://github.com/apache/flink/pull/6770#discussion_r226546566
 
 

 ##########
 File path: flink-runtime/src/main/java/org/apache/flink/runtime/rest/messages/taskmanager/TaskManagerLogFileWithRangeHeaders.java
 ##########
 @@ -0,0 +1,64 @@
+/*
+ * 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.flink.runtime.rest.messages.taskmanager;
+
+import org.apache.flink.runtime.rest.HttpMethodWrapper;
+import org.apache.flink.runtime.rest.handler.taskmanager.TaskManagerLogFileHandler;
+import org.apache.flink.runtime.rest.messages.EmptyRequestBody;
+import org.apache.flink.runtime.rest.messages.RangePathParameter;
+import org.apache.flink.runtime.rest.messages.UntypedResponseMessageHeaders;
+
+import java.util.Arrays;
+
+/**
+ * Headers for the {@link TaskManagerLogFileHandler}.
+ */
+public class TaskManagerLogFileWithRangeHeaders implements UntypedResponseMessageHeaders<EmptyRequestBody,
TaskManagerMessageParameters> {
 
 Review comment:
   We should unify this one with `TaskManagerLogFileHeaders`, `TaskManagerHistoricalLogFileHeaders`
and `TaskManagerStdoutFileHeaders`.
   `/taskmanagers/:taskmanagerId/logs/:logFilename?:range` is enough for all these.
   

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> WebUI shows logs unfriendly, especially when the amount of logs is large
> ------------------------------------------------------------------------
>
>                 Key: FLINK-10002
>                 URL: https://issues.apache.org/jira/browse/FLINK-10002
>             Project: Flink
>          Issue Type: Improvement
>          Components: Webfrontend
>            Reporter: zhangxinyu
>            Assignee: zhangxinyu
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.7.0
>
>         Attachments: image-2018-09-10-11-38-07-973.png
>
>
> When a streaming job run for a long time, the amount of logs may be very large. The current
WebUI shows all content of logs. It will cost much time to download logs from task managers.
and the browser cannot display the logs.
> Therefore, I suggest that Flink uses DailyRollingAppender to split logs by default, and
task manager provides an API that can get logs based on a parameter of time interval. In this
way WebUI can display logs based on time interval.



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