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Posted to commits@samza.apache.org by ya...@apache.org on 2014/08/15 07:28:08 UTC
svn commit: r1618097 [22/48] - in /incubator/samza/site: ./ archive/
community/ contribute/ css/ fonts/ img/latest/ img/latest/learn/
img/latest/learn/documentation/ img/latest/learn/documentation/comparisons/
img/latest/learn/documentation/container/ ...
Modified: incubator/samza/site/learn/documentation/0.7.0/api/javadocs/org/apache/samza/util/BlockingEnvelopeMap.BufferGauge.html
URL: http://svn.apache.org/viewvc/incubator/samza/site/learn/documentation/0.7.0/api/javadocs/org/apache/samza/util/BlockingEnvelopeMap.BufferGauge.html?rev=1618097&r1=1618096&r2=1618097&view=diff
==============================================================================
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+++ incubator/samza/site/learn/documentation/0.7.0/api/javadocs/org/apache/samza/util/BlockingEnvelopeMap.BufferGauge.html Fri Aug 15 05:28:03 2014
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Modified: incubator/samza/site/learn/documentation/0.7.0/api/javadocs/org/apache/samza/util/BlockingEnvelopeMap.html
URL: http://svn.apache.org/viewvc/incubator/samza/site/learn/documentation/0.7.0/api/javadocs/org/apache/samza/util/BlockingEnvelopeMap.html?rev=1618097&r1=1618096&r2=1618097&view=diff
==============================================================================
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long timeout)</code>
<div class="block">Poll the SystemConsumer to get any available messages from the underlying
system.</div>
</td>
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java.lang.String offset)</code>
<div class="block">Register a SystemStreamPartition to this SystemConsumer.</div>
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- <a href="../../../../org/apache/samza/util/Clock.html" title="interface in org.apache.samza.util">Clock</a> clock)</pre>
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- <a href="../../../../org/apache/samza/util/Clock.html" title="interface in org.apache.samza.util">Clock</a> clock,
- java.lang.String metricsGroupName)</pre>
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- java.lang.String offset)</pre>
-<div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../org/apache/samza/system/SystemConsumer.html#register-org.apache.samza.system.SystemStreamPartition-java.lang.String-">SystemConsumer</a></code></span></div>
+ java.lang.String offset)</pre>
+<div class="block"><strong>Description copied from interface: <code><a href="../../../../org/apache/samza/system/SystemConsumer.html#register(org.apache.samza.system.SystemStreamPartition,%20java.lang.String)">SystemConsumer</a></code></strong></div>
<div class="block">Register a SystemStreamPartition to this SystemConsumer. The SystemConsumer
should try and read messages from all SystemStreamPartitions that are
registered to it. SystemStreamPartitions should only be registered before
start is called.</div>
<dl>
-<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
-<dd><code><a href="../../../../org/apache/samza/system/SystemConsumer.html#register-org.apache.samza.system.SystemStreamPartition-java.lang.String-">register</a></code> in interface <code><a href="../../../../org/apache/samza/system/SystemConsumer.html" title="interface in org.apache.samza.system">SystemConsumer</a></code></dd>
-<dt><span class="paramLabel">Parameters:</span></dt>
-<dd><code>systemStreamPartition</code> - The SystemStreamPartition object representing the Samza
- SystemStreamPartition to receive messages from.</dd>
-<dd><code>offset</code> - String representing the offset of the point in the stream to start
+<dt><strong>Specified by:</strong></dt>
+<dd><code><a href="../../../../org/apache/samza/system/SystemConsumer.html#register(org.apache.samza.system.SystemStreamPartition,%20java.lang.String)">register</a></code> in interface <code><a href="../../../../org/apache/samza/system/SystemConsumer.html" title="interface in org.apache.samza.system">SystemConsumer</a></code></dd>
+<dt><span class="strong">Parameters:</span></dt><dd><code>systemStreamPartition</code> - The SystemStreamPartition object representing the Samza
+ SystemStreamPartition to receive messages from.</dd><dd><code>offset</code> - String representing the offset of the point in the stream to start
reading messages from. This is an inclusive parameter; if "7" were
specified, the first message for the system/stream/partition to be
- consumed and returned would be a message whose offset is "7".</dd>
-</dl>
+ consumed and returned would be a message whose offset is "7".</dd></dl>
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- long timeout)
- throws java.lang.InterruptedException</pre>
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+<pre>public java.util.List<<a href="../../../../org/apache/samza/system/IncomingMessageEnvelope.html" title="class in org.apache.samza.system">IncomingMessageEnvelope</a>> poll(java.util.Map<<a href="../../../../org/apache/samza/system/SystemStreamPartition.html" title="class in org.apache.samza.system">SystemStreamPartition</a>,java.lang.Integer> systemStreamPartitionAndMaxPerStream,
+ long timeout)
+ throws java.lang.InterruptedException</pre>
+<div class="block"><strong>Description copied from interface: <code><a href="../../../../org/apache/samza/system/SystemConsumer.html#poll(java.util.Map,%20long)">SystemConsumer</a></code></strong></div>
<div class="block">Poll the SystemConsumer to get any available messages from the underlying
system.
- <p>
- If the underlying implementation does not take care to adhere to the
+ <p>If the underlying implementation does not take care to adhere to the
timeout parameter, the SamzaContainer's performance will suffer
drastically. Specifically, if poll blocks when it's not supposed to, it
will block the entire main thread in SamzaContainer, and no messages will
- be processed while blocking is occurring.
- </p></div>
+ be processed while blocking is occurring.</div>
<dl>
-<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
-<dd><code><a href="../../../../org/apache/samza/system/SystemConsumer.html#poll-java.util.Set-long-">poll</a></code> in interface <code><a href="../../../../org/apache/samza/system/SystemConsumer.html" title="interface in org.apache.samza.system">SystemConsumer</a></code></dd>
-<dt><span class="paramLabel">Parameters:</span></dt>
-<dd><code>systemStreamPartitions</code> - A set of SystemStreamPartition to poll for new messages. If
- SystemConsumer has messages available for other registered
- SystemStreamPartitions, but they are not in the
- systemStreamPartitions set in a given poll invocation, they can't
+<dt><strong>Specified by:</strong></dt>
+<dd><code><a href="../../../../org/apache/samza/system/SystemConsumer.html#poll(java.util.Map,%20long)">poll</a></code> in interface <code><a href="../../../../org/apache/samza/system/SystemConsumer.html" title="interface in org.apache.samza.system">SystemConsumer</a></code></dd>
+<dt><span class="strong">Parameters:</span></dt><dd><code>systemStreamPartitionAndMaxPerStream</code> - A map from SystemStreamPartition to maximum number of messages to
+ return for the SystemStreamPartition. Polling with {stream1: 100,
+ stream2: 1000} tells the SystemConsumer that it can return between
+ 0 and 100 messages (inclusive) for stream1, and between 0 and 1000
+ messages for stream2. If SystemConsumer has messages available for
+ other registered SystemStreamPartitions, but they are not in the
+ systemStreamPartitions map in a given poll invocation, they can't
be returned. It is illegal to pass in SystemStreamPartitions that
- have not been registered with the SystemConsumer first.</dd>
-<dd><code>timeout</code> - If timeout < 0, poll will block unless all SystemStreamPartition
+ have not been registered with the SystemConsumer first.</dd><dd><code>timeout</code> - If timeout < 0, poll will block unless all SystemStreamPartition
are at "head" (the underlying system has been checked, and
- returned an empty set). If at head, an empty map is returned. If
- timeout >= 0, poll will return any messages that are currently
+ returned an empty set). If at head, an empty list is returned. If
+ timeout >= 0, poll will return any messages that are currently
available for any of the SystemStreamPartitions specified. If no
new messages are available, it will wait up to timeout
milliseconds for messages from any SystemStreamPartition to become
- available. It will return an empty map if the timeout is hit, and
+ available. It will return an empty list if the timeout is hit, and
no new messages are available.</dd>
-<dt><span class="returnLabel">Returns:</span></dt>
-<dd>A map from SystemStreamPartitions to any available
- IncomingMessageEnvelopes for the SystemStreamPartitions. If no
- messages are available for a SystemStreamPartition that was
- supplied in the polling set, the map will not contain a key for the
- SystemStreamPartition. Will return an empty map, not null, if no
- new messages are available for any SystemStreamPartitions in the
- input set.</dd>
-<dt><span class="throwsLabel">Throws:</span></dt>
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- java.util.List<<a href="../../../../org/apache/samza/system/IncomingMessageEnvelope.html" title="class in org.apache.samza.system">IncomingMessageEnvelope</a>> envelopes)
+ java.util.List<<a href="../../../../org/apache/samza/system/IncomingMessageEnvelope.html" title="class in org.apache.samza.system">IncomingMessageEnvelope</a>> envelopes)
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Modified: incubator/samza/site/learn/documentation/0.7.0/api/javadocs/org/apache/samza/util/Clock.html
URL: http://svn.apache.org/viewvc/incubator/samza/site/learn/documentation/0.7.0/api/javadocs/org/apache/samza/util/Clock.html?rev=1618097&r1=1618096&r2=1618097&view=diff
==============================================================================
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