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[Fix #204] Eliminate delay between binding and log checking #441

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[Fix #204] Eliminate delay between binding and log checking #441

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e8d1fbc
Eliminate delay between binding and checking for logs
andrewor14 Apr 18, 2014
b2eb46e
Document SPARK_PUBLIC_DNS and SPARK_HISTORY_OPTS for the history server
andrewor14 Apr 18, 2014
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5 changes: 5 additions & 0 deletions core/src/main/scala/org/apache/spark/deploy/history/HistoryServer.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -98,6 +98,11 @@ class HistoryServer(
def initialize() {
attachPage(new HistoryPage(this))
attachHandler(createStaticHandler(STATIC_RESOURCE_DIR, "/static"))
}

/** Bind to the HTTP server behind this web interface. */
override def bind() {
super.bind()
logCheckingThread.start()
}

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19 changes: 15 additions & 4 deletions docs/monitoring.md
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Expand Up @@ -39,22 +39,33 @@ You can start a the history server by executing:

The base logging directory must be supplied, and should contain sub-directories that each
represents an application's event logs. This creates a web interface at
`http://<server-url>:18080` by default. The history server depends on the following variables:
`http://<server-url>:18080` by default. The history server can be configured as follows:

<table class="table">
<tr><th style="width:21%">Environment Variable</th><th>Meaning</th></tr>
<tr>
<td><code>SPARK_DAEMON_MEMORY</code></td>
<td>Memory to allocate to the history server. (default: 512m).</td>
<td>Memory to allocate to the history server (default: 512m).</td>
</tr>
<tr>
<td><code>SPARK_DAEMON_JAVA_OPTS</code></td>
<td>JVM options for the history server (default: none).</td>
</tr>
<tr>
<td><code>SPARK_PUBLIC_DNS</code></td>
<td>
The public address for the history server. If this is not set, links to application history
may use the internal address of the server, resulting in broken links (default: none).
</td>
</tr>
<tr>
<td><code>SPARK_HISTORY_OPTS</code></td>
<td>
<code>spark.history.*</code> configuration options for the history server (default: none).
</td>
</tr>
</table>

Further, the history server can be configured as follows:

<table class="table">
<tr><th>Property Name</th><th>Default</th><th>Meaning</th></tr>
<tr>
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