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Re: Monitor: Adding graphs for each table and server - Accumulo - [mail # dev]
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...It was just an idea. Good monitoring is needed for large clusters and the little monitor web server shows its weaknesses when the number of nodes gets large enough. As a window i...
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Author: Eric Newton,
2013-04-10, 15:33
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Re: Accumulo and CDH4 -- "no tablet servers" - Accumulo - [mail # user]
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...I don't think it is. You can have multiple masters: they have a distributed election via zookeeper and the winner does coordination and the losers wait for the winner to die. Upd...
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Author: Eric Newton,
2013-04-09, 23:18
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Re: question about the values in the Ingest column on the monitor page - Accumulo - [mail # user]
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...Key/Value pairs per second (not rows), exponentially smoothed. Every time more pairs are ingested, the count is divided by the seconds since the last update. A portion of that ra...
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Author: Eric Newton,
2013-04-09, 12:38
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Re: Accumulo and CDH4 -- "no tablet servers" - Accumulo - [mail # user]
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...native map library blah.... blah... blah You will need to rebuild the native library for your machine as Josh suggested. Remember to push the shared libs out to other servers. &n...
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Author: Eric Newton,
2013-04-09, 02:14
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Re: Removing splits [SEC=UNCLASSIFIED] - Accumulo - [mail # user]
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...There are a few theoretical limits to the number of tablets you can have. 1) a row cannot be split over tablets: if you only have a billion rows, you can only have a billion tablets 2)...
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Author: Eric Newton,
2013-04-09, 01:56
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[ACCUMULO-1216] reconsider using SequenceFiles for the WAL - Accumulo - [issue]
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...Observing the code in HBase we learned that WAL files written/flushed to HDFS would not present the correct file size, which made using SequenceFile for WALs problematic. So we just wr...
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http://issues.apache.org/jira/browse/ACCUMULO-1216
Author: Eric Newton,
2013-04-08, 21:22
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Re: TabletServerMBean - can getTotalMajorCompactions be added? - Accumulo - [mail # dev]
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...You should get able to get the number of major compactions and the number of major compactions that are queued. accumulo.server.metrics -> TServerInfo -> TabletServerMBean -> ...
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Author: Eric Newton,
2013-04-08, 19:41
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Re: Increasing Ingest Rate - Accumulo - [mail # user]
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...Hopefully you are using accumulo 1.4.*3*. A performance issue (ACCUMULO-1062) was found in 1.4.2 when a large number of clients attempted to update a tablet concurrently. -Eric &...
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Author: Eric Newton,
2013-04-08, 13:31
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[ACCUMULO-1179] add zookeeper option to accumulo start script - Accumulo - [issue]
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...It would be nice if this worked:$ ./bin/accumulo zookeeper[zk: localhost:2181(CONNECTED) 0]...
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http://issues.apache.org/jira/browse/ACCUMULO-1179
Author: Eric Newton,
2013-04-06, 01:07
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[ACCUMULO-1239] CheckBalance is ending random walk tests - Accumulo - [issue]
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...CheckBalance ensures that accumulo is maintaining balance during the test. However, balance is always out-of-date when tservers are restarted for some period of time. The check a...
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http://issues.apache.org/jira/browse/ACCUMULO-1239
Author: Eric Newton,
2013-04-06, 01:07
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