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https://issues.apache.org/jira/browse/SPARK-18988?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15772317#comment-15772317
]
Chen He commented on SPARK-18988:
---------------------------------
It should be like:
{code}
if (!fileSystem.getFileStatus(new Path(logBaseDir)).isDirectory) {
try {
fileSystem.mkdirs(new Path(logBaseDir))
} catch {
case e: Exception =>
throw new IllegalArgumentException(s"Can not create log directory
$logBaseDir .")
}
}
{code}
> Spark "spark.eventLog.dir" dir should create the directory if it is different
> from "spark.history.fs.logDirectory"
> ------------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-18988
> URL: https://issues.apache.org/jira/browse/SPARK-18988
> Project: Spark
> Issue Type: Bug
> Components: Scheduler
> Affects Versions: 1.6.1
> Reporter: Chen He
> Priority: Minor
>
> When set "spark.history.fs.logDirectory" to be hdfs:///spark-history but set
> "spark.eventLog.dir" to be hdfs:///spark-history/eventLog. It reports
> following error.
> ERROR spark.SparkContext: Error initializing SparkContext.
> java.io.FileNotFoundException: File does not exist:
> hdfs:/spark-history/eventLog
> at
> org.apache.hadoop.hdfs.DistributedFileSystem$24.doCall(DistributedFileSystem.java:1367)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem$24.doCall(DistributedFileSystem.java:1359)
> at
> org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
> at
> org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:1359)
> at
> org.apache.spark.scheduler.EventLoggingListener.start(EventLoggingListener.scala:100)
> at org.apache.spark.SparkContext.<init>(SparkContext.scala:549)
> at
> org.apache.spark.api.java.JavaSparkContext.<init>(JavaSparkContext.scala:59)
> at com.oracle.test.logs.Main.main(Main.java:13)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:497)
> at
> org.apache.spark.deploy.yarn.ApplicationMaster$$anon$2.run(ApplicationMaster.scala:559)
> If spark event history has to be the same as "spark.history.fs.logDirectory",
> why has "spark.eventLog.dir". If not, In the EventLoggingListener.start(). It
> should try to create this dir instead of just simply throwing exception.
> {code}
> def start() {
> if (!fileSystem.getFileStatus(new Path(logBaseDir)).isDir) {
> throw new IllegalArgumentException(s"Log directory $logBaseDir does not
> exist.")
> }
> {code}
> It cause confusion, at the same time, Spark documentation does not make it
> clear
> {quote}
> Base directory in which Spark events are logged, if
> spark.eventLog.enabled is true. *Within this base directory* (???you must
> make sure it already exists???), Spark creates a sub-directory for each
> application, and logs the events specific to the application in this
> directory. Users may want to set this to a unified location like an HDFS
> directory so history files can be read by the history server.
> {quote}
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