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Optimizing table scans -
HBase - [mail # user]
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| ...So just to get it straight. The reason the scan with setBatch(1) is much much faster is because it returns the only the value for the first column ? On Wed, Sep 12, 2012 at 5:37 PM, Do... |
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Optimizing table scans - HBase - [mail # user]
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| ...I allocate 10GB per RegionServer. An average row size is ~200 Bytes. The network is 1GB. It would be great if anyone could elaborate on the difference between Cache and Batch parameter... |
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Optimizing table scans - HBase - [mail # user]
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| ...Hi all, I'm trying to find the sweet spot for the cache size and batch size Scan() parameters. I'm scanning one table using HTable.getScanner() and iterating over the ResultScann... |
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HBase 0.94.1 release date -
HBase - [mail # user]
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| ...Hi all, Anyone knows when (approximately) HBase 0.94.1 release will be available ? Thanks.... |
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The write process in the Region Server -
HBase - [mail # user]
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| ...Hi all, Thanks for all the help, I think I got it. In addition to everyone's advice I also found a useful post regarding stability and performance: http://kisalay.com/2012/04/09/hbase-... |
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The write process in the Region Server - HBase - [mail # user]
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| ...Thanks Doug, I read the regions section from the book like you recommended but I still have some questions left. When running a massive write job, the regionserver log show the memsize... |
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The write process in the Region Server - HBase - [mail # user]
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| ...Hi all, I'm trying to better understand what's going on in the region server during write to HBase. As I understand the process: 1. Data is written to memstore. 2. Once the... |
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Controlling Region Server Heap usage -
HBase - [mail # user]
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| ...Hi all, I'm working on a production cluster where each Region Server has 10GB allocated memory, and I'm trying to control (limit) the memory usage during massive writes. HBase co... |
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Dynamic load of Coprocessors -
HBase - [mail # user]
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| ...Hi all, I can't seem to understand if there is a way to dynamically load coprocessors ? The best way I found so far is using the shell: *alter 'URLS', METHOD => 'table_a... |
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java.lang.ClassNotFoundException: com.google.protobuf.Message -
HBase - [mail # user]
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| ...you mean protobuf-java-2.4.04.jar or there is a new version like you wrote protobuf-java-2.4.9.a.jar ? On Mon, Jun 4, 2012 at 6:09 AM, NNever wrote: > Hi Amit, &n... |
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PooledHTable missing Override to getWriteBuffer ? -
HBase - [mail # user]
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| ...In HBase 0.94.0 I noticed that PooledHTable (in HTablePool) @Overrides some HTable methods but missing getWriteBuffer(). Is that on purpose ? because when I get a PooledHTable from the... |
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HBase 0.94 security configurations -
HBase - [mail # user]
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| ...Anyone has a working basic-test for hbase 0.94.0 ? I would like to have a reference for setups... Thanks. On Sat, Jun 2, 2012 at 9:42 PM, Andrew Purtell wrote: > It's hi... |
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HBase 0.94 security configurations - HBase - [mail # user]
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| ...I don't know about a local zookeeper running. I'm trying to run a test that extends HBaseTestingUtils. It worked fine with the old versions when it extended HBaseClusterTestCase. Since it is... |
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HBase 0.94 security configurations - HBase - [mail # user]
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| ...I still get the same error. This is the contents of the configuration as it is set right before calling "new HBaseAdmin(getConfiguration())": key :hbase.auth.token.max.lifetime v... |
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HBase 0.94 security configurations - HBase - [mail # user]
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| ...I did some debug and the code does calls HBaseConfiguration.create() - since my test extends HBaseTestingUtility. and conf.properties.get("hbase.zookeeper.quorum") returns "localhost". ... |
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HBase 0.94 security configurations - HBase - [mail # user]
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| ...I'm trying to run a test for HBase (some think we wrote, internal) on my laptop - runs perfectly with the old versions of Hadoop, HBase and ZooKeeeper. After deploying the new versions... |
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HBase 0.94 security configurations - HBase - [mail # user]
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| ...I still don't understand if it is optional to use the security or not ? if i'll set the following in hbase-site.xml: hbase.zookeeper.property.require... |
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HBase 0.94 security configurations - HBase - [mail # user]
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| ...Hi all, I'm upgrading our cluster with the following versions: HBase 0.90.2 to 0.94.0 Hadoop 0.20.3 to 1.0.3 zookeeper 3.3.2 to 3.4.3 As a first step, I'm trying to run some test... |
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upgrading HBase 0.90.2 to HBase 0.94 -
HBase - [mail # user]
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| ...>From what I read a rolling restart from 90 to 94 is not expected to work... I was thinking of a shutdown & restart. If anyone did it, I'd be happy to get some pointers of wha... |
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upgrading HBase 0.90.2 to HBase 0.94 - HBase - [mail # user]
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| ...Hi everybody, I want to upgrade my HBase cluster (currently running 0.90.2) to 0.94. Is it possible to upgrade right away or do I need to install 0.92 first ? If anyone alr... |
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Unique ID per URL -
HBase - [mail # user]
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| ...Hi all, One of our HBase tables holds URL as a row key. I read that it is recommended to hold the URL key as: reversed domain + URL ID (using unique id per url.) I un... |
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