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[SPARK-44214][CORE] Support Spark Driver Live Log UI
### What changes were proposed in this pull request? This PR aims to add `Driver Log` UI in order to provide a better UX like `Standalone Cluster`. ### Why are the changes needed? - Since Apache Spark 3.0.0, Spark History Server supports driver logs via `spark.driver.log.persistToDfs.enabled` and `spark.driver.log.dfsDir`. - For Apache Spark 4.0.0, this PR aims to support `Live Driver Log UI` page in Spark Driver UI (port 4040) via `spark.driver.log.localDir`. It means we can see the live driver log like the following via UI. **SPARK-SHELL** ``` $ bin/spark-shell -c spark.driver.log.localDir=/tmp/logs ``` ![Screenshot 2023-08-21 at 4 37 33 PM](https://github.com/apache/spark/assets/9700541/d08c452a-9b7d-49de-a2b2-54ad86e989cb) **K8S** ``` bin/spark-submit \ --master k8s://$K8S_MASTER \ --deploy-mode cluster \ --name log \ -c spark.executor.instances=10 \ -c spark.driver.log.localDir=file://tmp/ \ -c spark.kubernetes.driver.master=$K8S_MASTER \ -c spark.kubernetes.namespace=$NAMESPACE \ ``` ### Does this PR introduce _any_ user-facing change? No. ### How was this patch tested? Pass the CIs with the newly added test case. Closes apache#42542 from dongjoon-hyun/SPARK-44214. Authored-by: Dongjoon Hyun <[email protected]> Signed-off-by: Dongjoon Hyun <[email protected]>
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core/src/main/scala/org/apache/spark/ui/DriverLogPage.scala
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/* | ||
* 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.spark.ui | ||
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import javax.servlet.http.HttpServletRequest | ||
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import scala.xml.{Node, Unparsed} | ||
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import org.apache.spark.SparkConf | ||
import org.apache.spark.internal.Logging | ||
import org.apache.spark.internal.config.DRIVER_LOG_LOCAL_DIR | ||
import org.apache.spark.util.Utils | ||
import org.apache.spark.util.logging.DriverLogger.DRIVER_LOG_FILE | ||
import org.apache.spark.util.logging.RollingFileAppender | ||
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/** | ||
* Live Spark Driver Log UI Page. | ||
* | ||
* This is similar with Spark worker's LogPage class. | ||
*/ | ||
private[ui] class DriverLogPage( | ||
parent: DriverLogTab, | ||
conf: SparkConf) | ||
extends WebUIPage("") with Logging { | ||
require(conf.get(DRIVER_LOG_LOCAL_DIR).nonEmpty, s"Please specify ${DRIVER_LOG_LOCAL_DIR.key}.") | ||
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private val supportedLogTypes = Set(DRIVER_LOG_FILE, "stderr", "stdout") | ||
private val defaultBytes = 100 * 1024 | ||
private val logDir = conf.get(DRIVER_LOG_LOCAL_DIR).get | ||
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def render(request: HttpServletRequest): Seq[Node] = { | ||
val logType = Option(request.getParameter("logType")).getOrElse(DRIVER_LOG_FILE) | ||
val offset = Option(request.getParameter("offset")).map(_.toLong) | ||
val byteLength = Option(request.getParameter("byteLength")).map(_.toInt) | ||
.getOrElse(defaultBytes) | ||
val (logText, startByte, endByte, logLength) = getLog(logDir, logType, offset, byteLength) | ||
val curLogLength = endByte - startByte | ||
val range = | ||
<span id="log-data"> | ||
Showing {curLogLength} Bytes: {startByte.toString} - {endByte.toString} of {logLength} | ||
</span> | ||
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val moreButton = | ||
<button type="button" onclick={"loadMore()"} class="log-more-btn btn btn-secondary"> | ||
Load More | ||
</button> | ||
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val newButton = | ||
<button type="button" onclick={"loadNew()"} class="log-new-btn btn btn-secondary"> | ||
Load New | ||
</button> | ||
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val alert = | ||
<div class="no-new-alert alert alert-info" style="display: none;"> | ||
End of Log | ||
</div> | ||
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val logParams = "/?logType=%s".format(logType) | ||
val jsOnload = "window.onload = " + | ||
s"initLogPage('$logParams', $curLogLength, $startByte, $endByte, $logLength, $byteLength);" | ||
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val content = | ||
<script src={UIUtils.prependBaseUri(request, "/static/utils.js")}></script> ++ | ||
<div> | ||
Logs at {logDir} | ||
{range} | ||
<div class="log-content" style="height:80vh; overflow:auto; padding:5px;"> | ||
<div>{moreButton}</div> | ||
<pre>{logText}</pre> | ||
{alert} | ||
<div>{newButton}</div> | ||
</div> | ||
<script>{Unparsed(jsOnload)}</script> | ||
</div> | ||
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UIUtils.headerSparkPage(request, "Logs", content, parent) | ||
} | ||
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def renderLog(request: HttpServletRequest): String = { | ||
val logType = Option(request.getParameter("logType")).getOrElse(DRIVER_LOG_FILE) | ||
val offset = Option(request.getParameter("offset")).map(_.toLong) | ||
val byteLength = Option(request.getParameter("byteLength")).map(_.toInt) | ||
.getOrElse(defaultBytes) | ||
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val (logText, startByte, endByte, logLength) = getLog(logDir, logType, offset, byteLength) | ||
val pre = s"==== Bytes $startByte-$endByte of $logLength of $logDir$logType ====\n" | ||
pre + logText | ||
} | ||
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/** Get the part of the log files given the offset and desired length of bytes */ | ||
private def getLog( | ||
logDirectory: String, | ||
logType: String, | ||
offsetOption: Option[Long], | ||
byteLength: Int | ||
): (String, Long, Long, Long) = { | ||
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if (!supportedLogTypes.contains(logType)) { | ||
return ("Error: Log type must be one of " + supportedLogTypes.mkString(", "), 0, 0, 0) | ||
} | ||
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try { | ||
val files = RollingFileAppender.getSortedRolledOverFiles(logDirectory, logType) | ||
logDebug(s"Sorted log files of type $logType in $logDirectory:\n${files.mkString("\n")}") | ||
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val fileLengths: Seq[Long] = files.map(Utils.getFileLength(_, conf)) | ||
val totalLength = fileLengths.sum | ||
val offset = offsetOption.getOrElse(totalLength - byteLength) | ||
val startIndex = { | ||
if (offset < 0) { | ||
0L | ||
} else if (offset > totalLength) { | ||
totalLength | ||
} else { | ||
offset | ||
} | ||
} | ||
val endIndex = math.min(startIndex + byteLength, totalLength) | ||
logDebug(s"Getting log from $startIndex to $endIndex") | ||
val logText = Utils.offsetBytes(files, fileLengths, startIndex, endIndex) | ||
logDebug(s"Got log of length ${logText.length} bytes") | ||
(logText, startIndex, endIndex, totalLength) | ||
} catch { | ||
case e: Exception => | ||
logError(s"Error getting $logType logs from directory $logDirectory", e) | ||
("Error getting logs due to exception: " + e.getMessage, 0, 0, 0) | ||
} | ||
} | ||
} | ||
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/** | ||
* Live Spark Driver Log UI Tab. | ||
*/ | ||
private[ui] class DriverLogTab(parent: SparkUI) extends SparkUITab(parent, "logs") { | ||
private val page = new DriverLogPage(this, parent.conf) | ||
attachPage(page) | ||
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def getPage: DriverLogPage = page | ||
} |
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65
core/src/test/scala/org/apache/spark/ui/DriverLogPageSuite.scala
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/* | ||
* 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. | ||
*/ | ||
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package org.apache.spark.ui | ||
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import java.io.File | ||
import java.nio.charset.StandardCharsets | ||
import javax.servlet.http.HttpServletRequest | ||
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import org.apache.commons.io.FileUtils | ||
import org.mockito.Mockito.{mock, when} | ||
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import org.apache.spark.{SparkConf, SparkFunSuite} | ||
import org.apache.spark.internal.config.DRIVER_LOG_LOCAL_DIR | ||
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class DriverLogPageSuite extends SparkFunSuite { | ||
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test("DriverLogTab requires driver log location") { | ||
val sparkUI = mock(classOf[SparkUI]) | ||
when(sparkUI.conf).thenReturn(new SparkConf(false)) | ||
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val m = intercept[IllegalArgumentException] { | ||
new DriverLogTab(sparkUI) | ||
}.getMessage | ||
assert(m.contains(s"Please specify ${DRIVER_LOG_LOCAL_DIR.key}")) | ||
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} | ||
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test("DriverLogPage requires driver log location") { | ||
val conf = new SparkConf(false) | ||
val m = intercept[IllegalArgumentException] { | ||
new DriverLogPage(null, conf) | ||
}.getMessage | ||
assert(m.contains(s"Please specify ${DRIVER_LOG_LOCAL_DIR.key}")) | ||
} | ||
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test("renderLog reads driver.log file") { | ||
val conf = new SparkConf(false) | ||
withTempDir { dir => | ||
val page = new DriverLogPage(null, conf.set(DRIVER_LOG_LOCAL_DIR, dir.getCanonicalPath)) | ||
val file = new File(dir, "driver.log") | ||
FileUtils.writeStringToFile(file, "driver log content", StandardCharsets.UTF_8) | ||
val request = mock(classOf[HttpServletRequest]) | ||
val log = page.renderLog(request) | ||
assert(log.startsWith("==== Bytes 0-18 of 18 of")) | ||
assert(log.contains("driver.log")) | ||
assert(log.contains("driver log content")) | ||
} | ||
} | ||
} |
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