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package spark.ui.storage
import javax.servlet.http.HttpServletRequest
import scala.xml.Node
import spark.storage.{RDDInfo, StorageUtils}
import spark.Utils
import spark.ui.UIUtils._
import spark.ui.Page._
/** Page showing list of RDD's currently stored in the cluster */
private[spark] class IndexPage(parent: BlockManagerUI) {
val sc = parent.sc
def render(request: HttpServletRequest): Seq[Node] = {
val storageStatusList = sc.getExecutorStorageStatus
// Calculate macro-level statistics
val maxMem = storageStatusList.map(_.maxMem).reduce(_+_)
val remainingMem = storageStatusList.map(_.memRemaining).reduce(_+_)
val diskSpaceUsed = storageStatusList.flatMap(_.blocks.values.map(_.diskSize))
.reduceOption(_+_).getOrElse(0L)
val rddHeaders = Seq(
"RDD Name",
"Storage Level",
"Cached Partitions",
"Fraction Partitions Cached",
"Size in Memory",
"Size on Disk")
val rdds = StorageUtils.rddInfoFromStorageStatus(storageStatusList, sc)
val rddTable = listingTable(rddHeaders, rddRow, rdds)
val content =
<div class="row">
<div class="span12">
<ul class="unstyled">
<li><strong>Memory:</strong>
{Utils.memoryBytesToString(maxMem - remainingMem)} Used
({Utils.memoryBytesToString(remainingMem)} Available) </li>
<li><strong>Disk:</strong> {Utils.memoryBytesToString(diskSpaceUsed)} Used </li>
</ul>
</div>
</div> ++ {rddTable};
headerSparkPage(content, parent.sc, "Spark Storage ", Storage)
}
def rddRow(rdd: RDDInfo): Seq[Node] = {
<tr>
<td>
<a href={"/storage/rdd?id=%s".format(rdd.id)}>
{rdd.name}
</a>
</td>
<td>{rdd.storageLevel.description}
</td>
<td>{rdd.numCachedPartitions}</td>
<td>{rdd.numCachedPartitions / rdd.numPartitions.toDouble}</td>
<td>{Utils.memoryBytesToString(rdd.memSize)}</td>
<td>{Utils.memoryBytesToString(rdd.diskSize)}</td>
</tr>
}
}
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