Replace default buffer value to 100 GB, changed buttons to use String...

Replace default buffer value to 100 GB, changed buttons to use String notation, removed default buffer parameter in UI URLs

core/src/main/scala/spark/deploy/master/ui/ApplicationPage.scala

@@ -90,9 +90,9 @@ private[spark] class ApplicationPage(parent: MasterWebUI) {
       <td>{executor.memory}</td>
       <td>{executor.state}</td>
       <td>
-        <a href={"%s/logPage?appId=%s&executorId=%s&logType=stdout&byteLength=10000"
+        <a href={"%s/logPage?appId=%s&executorId=%s&logType=stdout"
           .format(executor.worker.webUiAddress, executor.application.id, executor.id)}>stdout</a>
-        <a href={"%s/logPage?appId=%s&executorId=%s&logType=stderr&byteLength=10000"
+        <a href={"%s/logPage?appId=%s&executorId=%s&logType=stderr"
           .format(executor.worker.webUiAddress, executor.application.id, executor.id)}>stderr</a>
       </td>
     </tr>

core/src/main/scala/spark/deploy/worker/ui/IndexPage.scala

@@ -89,9 +89,9 @@ private[spark] class IndexPage(parent: WorkerWebUI) {
         </ul>
       </td>
       <td>
-	 <a href={"logPage?appId=%s&executorId=%s&logType=stdout&byteLength=10000"
+	 <a href={"logPage?appId=%s&executorId=%s&logType=stdout"
           .format(executor.appId, executor.execId)}>stdout</a>
-	 <a href={"logPage?appId=%s&executorId=%s&logType=stderr&byteLength=10000"
+	 <a href={"logPage?appId=%s&executorId=%s&logType=stderr"
           .format(executor.appId, executor.execId)}>stderr</a>
       </td> 
     </tr>

core/src/main/scala/spark/deploy/worker/ui/WorkerWebUI.scala

@@ -54,7 +54,7 @@ class WorkerWebUI(val worker: Worker, val workDir: File, requestedPort: Option[I
   }
 
   def log(request: HttpServletRequest): String = {
-    val defaultBytes = 10000
+    val defaultBytes = 100 * 1024
     val appId = request.getParameter("appId")
     val executorId = request.getParameter("executorId")
     val logType = request.getParameter("logType")
@@ -72,7 +72,7 @@ class WorkerWebUI(val worker: Worker, val workDir: File, requestedPort: Option[I
   }
 
   def logPage(request: HttpServletRequest): Seq[scala.xml.Node] = {
-    val defaultBytes = 10000
+    val defaultBytes = 100 * 1024
     val appId = request.getParameter("appId")
     val executorId = request.getParameter("executorId")
     val logType = request.getParameter("logType")
@@ -95,7 +95,8 @@ class WorkerWebUI(val worker: Worker, val workDir: File, requestedPort: Option[I
         <a href={"?appId=%s&executorId=%s&logType=%s&offset=%s&byteLength=%s"
           .format(appId, executorId, logType, math.max(startByte-byteLength, 0),
             byteLength)}>
-          <button>Previous {math.min(byteLength, startByte)} Bytes</button>
+          <button>Previous {Utils.memoryBytesToString(math.min(byteLength, startByte))} Bytes
+            </button>
         </a>
       }
       else {
@@ -106,7 +107,8 @@ class WorkerWebUI(val worker: Worker, val workDir: File, requestedPort: Option[I
       if (endByte < logLength) {
         <a href={"?appId=%s&executorId=%s&logType=%s&offset=%s&byteLength=%s".
           format(appId, executorId, logType, endByte, byteLength)}>
-          <button>Next {math.min(byteLength, logLength-endByte)} Bytes</button>
+          <button>Next {Utils.memoryBytesToString(math.min(byteLength, logLength-endByte))} Bytes
+            </button>
         </a>
       }
       else {
@@ -135,7 +137,7 @@ class WorkerWebUI(val worker: Worker, val workDir: File, requestedPort: Option[I
   /** Determine the byte range for a log or log page. */
   def getByteRange(path: String, offset: Option[Long], byteLength: Int)
   : (Long, Long) = {
-    val defaultBytes = 10000
+    val defaultBytes = 100 * 1024
     val maxBytes = 1024 * 1024
 
     val file = new File(path)