Github user squito commented on a diff in the pull request:
https://github.com/apache/spark/pull/5792#discussion_r30265291
--- Diff:
core/src/main/scala/org/apache/spark/deploy/history/HistoryServer.scala ---
@@ -104,6 +108,52 @@ class HistoryServer(
initialize()
+ private[spark] class HistoryServlet(val appId: String) extends
HttpServlet {
+
+ // SPARK-5983 ensure TRACE is not supported
+ protected override def doTrace(req: HttpServletRequest, res:
HttpServletResponse): Unit = {
+ res.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED)
+ }
+
+ protected override def doGet(req: HttpServletRequest, res:
HttpServletResponse): Unit = {
+ try {
+ val tempDir = Utils.createTempDir()
+ Utils.chmod700(tempDir)
+ provider.getApplicationEventLogs(appId, tempDir) match {
+ case Some(file) =>
+ val inStream = new FileInputStream(file)
+ res.setContentType("application/zip")
+ res.setHeader("Content-Disposition", s"attachment;
filename=${file.getName}")
+ val length = file.length()
+ if (length <= Integer.MAX_VALUE) {
+ res.setContentLength(length.toInt)
+ } else {
+ res.setHeader("Content-Length", length.toString)
+ }
+ val buffer = new Array[Byte](1024 * 1024)
+ val outputStream = res.getOutputStream
+ var remaining = true
+ while (remaining) {
+ val read = inStream.read(buffer)
+ if (read != -1) {
+ outputStream.write(buffer, 0, read)
+ } else {
+ remaining = false
+ }
+ }
+ outputStream.flush()
+
+ case None =>
+ res.sendError(HttpServletResponse.SC_NO_CONTENT)
+ }
+ Utils.deleteRecursively(tempDir)
--- End diff --
should this go in a `finally`?
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