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Re: Does HBase combine multiple Puts against the same region server? - HBase - [mail # user]
...Is that done in current HBase implementation (say, 0.94.2 or more recent one) or it requires applications to handle it? Thanks for your note, Yun  On Thu, Dec 6, 2012 at 1:42 PM, Jimmy ...
   Author: yun peng, 2012-12-06, 19:08
Re: Is Put() operation a synchronous call on server side? - HBase - [mail # user]
...Hi, Dong and Harsh, thanks for your detailed explanations. Based on Dong's answers, I summarise the call path a little bit. HTable.flushCommits()->HConnection.processBatch()->HConnecti...
   Author: yun peng, 2012-12-06, 18:32
Issues on disabling compaction in HBase 0.94.2 - HBase - [mail # user]
...Hi, I want to disable automatic compaction in HBase. Currently I used following configurations in conf/hbase-site.xml The problem is compaction does not really be disable. As write are issue...
   Author: yun peng, 2012-11-22, 23:50
Re: How to check if a major_compact is done? - HBase - [mail # user]
...Hi, as I recently find out, by spinning on  getStorefiles = task.getStores() may not be a robust method to check if a compaction is done. For instance, if the interval for checking is s...
   Author: yun peng, 2012-11-17, 01:03
How to monitor total disk access in HBase? - HBase - [mail # user]
...Hi, I want to profile the # of disk access (both random and sequential) issued from HBase (into HDFS). For disk reads, I have tried use blockCacheMissCount, which seems working. But is it th...
   Author: yun peng, 2012-11-10, 15:03
Re: What could cause HBase's writes slower than reads? - HBase - [mail # user]
...Yes Mohit, that's the cause! HBase is read values not present in datatable, which leads to very fast read performance. When I change it to reading valid values in data table, it is back to n...
   Author: yun peng, 2012-11-04, 15:08
Re: Could not find my address in the list of ZooKeeper quorum servers - HBase - [mail # user]
...Thanks for the reply, yes, it works if I use IP address. regards, Yun  On Fri, Oct 26, 2012 at 11:37 PM, Stack  wrote:  ...
   Author: yun peng, 2012-10-27, 03:50
Re: How to config hbase0.94.2 to retain deleted data - HBase - [mail # user]
...Hi, Lars, that is great point. It works if I update the tabledescriptor with the table disabled. It looks online updating table descriptor generally not working...  Besides, in addition...
   Author: yun peng, 2012-10-22, 00:20
Re: When does HBase set modification timestamp of a HFile? - HBase - [mail # user]
...Hi lohit and Stack, You are right, it always ends with 000. My setup in the test is hbase 0.94.2 running on local vfs.  Is this tied with current hbase implementation or something to do...
   Author: yun peng, 2012-10-21, 01:42
Re: Problems using unqualified hostname on hbase - HBase - [mail # user]
...Thanks for the notes. I am running the project configuration for comparison, (as worst case for locality)... On other hand, even if I make them to colocate, the problem persists, as the prop...
   Author: yun peng, 2012-10-18, 02:09
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