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Re: zk connection leak with TableInput/OutputFormat (CDH3b4, 0.90.1) - HBase - [mail # user]
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...I am having this same problem. After every run of my map-reduce job which uses TableInputFormat, I am leaking one ZK connection. The connections that are not being cleaned up are...
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Author: Bryan Keller,
2011-04-15, 22:41
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Is there a setting to cap row size? - HBase - [mail # user]
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...I have a wide table schema for an HBase table, where I model a one-to-many relationship of purchase orders and line items. Each row is a purchase order, and I add columns for eac...
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Author: Bryan Keller,
2011-04-07, 07:24
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Re: Connecting to HBase from OSGi - HBase - [mail # user]
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...Yes you can, I use Felix and Eclipse Virgo Blueprint in my app, and it connects to HBase. The HBase and Hadoop jars are not bundles, however, so you will need to either put them ...
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Author: Bryan Keller,
2011-03-23, 17:35
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Re: Long client pauses with compression - HBase - [mail # user]
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...I changed the settings as described below: hbase.hstore.blockingStoreFiles=20 hbase.hregion.memstore.block.multiplier=4 MAX_FILESIZE=512mb MEMSTORE_FLUSHSIZE=128mb I also created...
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Author: Bryan Keller,
2011-03-15, 02:04
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Re: Long client pauses with compression - HBase - [mail # user]
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...This is very informative and helpful, I will try changing the settings and will report back. On Mon, Mar 14, 2011 at 11:54 AM, Jean-Daniel Cryans wrote: ...
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Author: Bryan Keller,
2011-03-14, 20:18
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Re: Long client pauses with compression - HBase - [mail # user]
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...If interested, I wrote a small program that demonstrates the problem (http://vancameron.net/HBaseInsert.zip). It uses Gradle, so you'll need that. To run, enter "gradle run". &nb...
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Author: Bryan Keller,
2011-03-13, 20:48
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Long client pauses with compression - HBase - [mail # user]
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...I am using the Java client API to write 10,000 rows with about 6000 columns each, via 8 threads making multiple calls to the HTable.put(List) method. I start with an empty table ...
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Author: Bryan Keller,
2011-03-13, 08:14
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HBase Java client dependencies - HBase - [mail # user]
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...In my application I'm using the Java HBase API. I'm using Maven (well, Gradle actually) to declare a dependency on HBase. Unfortunately, the dependency on HBase drags every trans...
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Author: Bryan Keller,
2011-03-01, 02:33
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Re: Insert into tall table 50% faster than wide table - HBase - [mail # user]
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...Correction, I ran the wrong test. Consolidating the Puts increased performance back to that of the tall table. So it appears row locks were the issue. Thanks for the help everyon...
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Author: Bryan Keller,
2010-12-23, 22:44
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Re: Insert into tall table 50% faster than wide table - HBase - [mail # user]
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...I revised the test so that it creates a single Put for each customer. Previously I was creating a separate Put for each order, even if the order was for the same customer. I subm...
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Author: Bryan Keller,
2010-12-23, 22:28
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