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131 discussions - 753 posts

  • Hello, I'm curious as to what a 'good' approach would be for implementing search in HBase (using Lucene) with the end goal being the integration of realtime search into HBase. I think the use case ...
    Jason RutherglenJason Rutherglen
    Feb 11, 2011 at 11:10 pm
    Apr 20, 2011 at 8:55 pm
  • much hangs. I am simply calling the disableTable method fo HBaseAdmin. The table has ~ 500 regions with default region file size. I couldn't tell anything abnormal from the master's log. When I click ...
    Nanheng WuNanheng Wu
    Feb 16, 2011 at 10:22 pm
    Mar 1, 2011 at 8:21 pm
  • I can't get many versions of the specified column,but only get the latest version of the specified column. Is there anyone help me? //put data by version final Put p = new Put(key); // key final long ...
    陈加俊陈加俊
    Feb 23, 2011 at 10:54 am
    Mar 7, 2011 at 6:55 am
  • I have a long running Hadoop streaming job that also puts about a billion sub 1kb rows into Hbase via thrift, and last night I got quite a few errors like this one: Still had 34 puts left after ...
    Chris TarnasChris Tarnas
    Feb 15, 2011 at 5:01 pm
    Feb 16, 2011 at 6:52 pm
  • Hi, I'm new to HBase and have a stupid question about its dependency on Hadoop. Section 1.3.1.2 of (http://hbase.apache.org/notsoquick.html) says there is an "instance" of Hadoop in the lib directory ...
    Mike SpreitzerMike Spreitzer
    Feb 5, 2011 at 7:48 am
    Feb 14, 2011 at 2:41 am
  • Are endrows inclusive or exclusive? The docs say exclusive, but then the question arises as to how to form the last split for getSplits(). The code below runs fine, but I believe it is omitting some ...
    Geoff HendreyGeoff Hendrey
    Feb 10, 2011 at 7:37 am
    Feb 11, 2011 at 11:04 am
  • I know there were some changes in .90 in terms of how region balancing occurs. Is there a resource somewhere that describes the options for the configuration? Per Jonathan Gray's recommendation we ...
    WayneWayne
    Feb 2, 2011 at 7:51 pm
    Feb 3, 2011 at 6:41 pm
  • Hi , which hadoop and zookeeper version should I use with hbase 0.90.1. thanks in advance Oleg.
    Oleg RuchovetsOleg Ruchovets
    Feb 22, 2011 at 10:53 pm
    Mar 16, 2011 at 8:27 pm
  • all was working fine and suddenly I see a lot of logs like below 2011-02-15 22:19:04,023 DEBUG org.apache.hadoop.hbase.io.hfile.LruBlockCache: Block cache LRU eviction started; Attempting to free ...
    Vishal KapoorVishal Kapoor
    Feb 16, 2011 at 3:25 am
    Feb 18, 2011 at 12:30 am
  • Hi, Over on http://www.larsgeorge.com/2010/05/hbase-file-locality-in-hdfs.html I saw this bit: "The most important factor is that HBase is not restarted frequently and that it performs house keeping ...
    Otis GospodneticOtis Gospodnetic
    Feb 16, 2011 at 12:31 pm
    Feb 17, 2011 at 5:55 pm
  • Hi all, Lily is a data/content repository that integrates HBase with SOLR: flexible content storage and automatic index maintenance - at scale. It's available under the Apache license. This release ...
    Steven NoelsSteven Noels
    Feb 14, 2011 at 3:21 pm
    Feb 15, 2011 at 5:36 pm
  • Hi, I have this code to read and write to HBase from MR, and it works fine with 0 reducers, but it gives a type mismatch error when with 1 reducer. What should I look at? *Thank you!* *Code:* static ...
    Mark KerznerMark Kerzner
    Feb 3, 2011 at 8:24 pm
    Feb 7, 2011 at 4:54 pm
  • Hello, I am using hbase 0.90.0 with hadoop-append. h/w ( Dell 1950, 2 CPU, 6 GB RAM) I had 9 Region Servers crash (out of 30) in a span of 30 minutes during a heavy reads. It looks like a GC, ...
    Charan kumarCharan kumar
    Feb 3, 2011 at 7:48 pm
    Feb 4, 2011 at 8:56 pm
  • I am looking for tool that allows me to import data from mysql to hbase. Any suggestion? Thank you :)
    Weishung ChungWeishung Chung
    Feb 3, 2011 at 9:18 pm
    Feb 4, 2011 at 2:51 pm
  • Hi all, It seems that we are getting a lot of repeated questions now. Perhaps it would be useful to start migrating the simple questions off to stackoverflow (or whichever stack exchange website is ...
    Buttler, DavidButtler, David
    Feb 24, 2011 at 1:32 am
    Mar 15, 2011 at 5:43 am
  • Hi all, Let's say I have two entities Parent and Child. There could be many children in one parent (from hundreds to tens of millions) A child can only belong to one Parent. Typical queries are: ...
    JasonJason
    Feb 11, 2011 at 12:55 am
    Feb 12, 2011 at 8:37 pm
  • Hello, I have a HBase cluster chock-full of data and would like to run canned reports (i.e., reports known ahead of time), but also ad-hoc reports against that data. Are there any open-source or ...
    Otis GospodneticOtis Gospodnetic
    Feb 25, 2011 at 9:02 pm
    Feb 25, 2011 at 11:58 pm
  • Hi, In http://hbase.apache.org/upgrading.html it says that I should scan my .META. table to check my MEMSTORE_SIZE to ensure that it is not 16MB. It is not at all clear what the correct value should ...
    Buttler, DavidButtler, David
    Feb 28, 2011 at 10:26 pm
    Mar 1, 2011 at 6:47 pm
  • Hi, guys, I have these lines trying to connect to the HBase, and it works perfectly well when I am connecting on that machine that runs HBase, but not when I am connecting from the outside. What ...
    Mark KerznerMark Kerzner
    Feb 6, 2011 at 2:57 am
    Feb 10, 2011 at 2:06 pm
  • Hello, does anyone have backup utility from HBASE-897 for hbase 0.89 as a jar? I'm not able to compile it on my own. :( Ondrej
    Ondrej HolecekOndrej Holecek
    Feb 28, 2011 at 2:16 pm
    Mar 2, 2011 at 8:26 pm
  • Hi, We have a newly setup a cluster of 5 nodes, each with 16 GB rams. We use HBase 0.90.0 on top of Hadoop from CDH3. When testing HBase under heavy load generated bu YCSB, we consistently see region ...
    Enis SoztutarEnis Soztutar
    Feb 16, 2011 at 8:41 am
    Feb 22, 2011 at 9:19 pm
  • Please use the hbase mailing list for HBase-related questions. Regarding your issue, we'll need more information to help you out. Haven you checked the logs? If you see exceptions in there, did you ...
    Jean-Daniel CryansJean-Daniel Cryans
    Feb 14, 2011 at 5:54 pm
    Feb 17, 2011 at 5:21 pm
  • Hi I've had this before ..but not to 70% of the cluster..region servers all dying..Any insight is helpful. Using hbase-0.20.6, hadoop-0.20.2 I don't see any error in the datanode or the namenode many ...
    VenkateshVenkatesh
    Feb 10, 2011 at 6:43 pm
    Feb 11, 2011 at 2:39 am
  • I am in the process of building out a clustered environment that is going to start very small but grow extremely fast. I am just trying to figure out the following: 1. How many master nodes can I ...
    Joseph ColemanJoseph Coleman
    Feb 7, 2011 at 7:05 pm
    Feb 7, 2011 at 7:58 pm
  • Is it advisable to use HBase as a backend for a GUI app or is HBase more for storing huge amounts of data used mainly for data analysis in non-online/batch mode? In other words, after storing data on ...
    Something SomethingSomething Something
    Feb 3, 2011 at 10:49 pm
    Feb 5, 2011 at 9:44 am
  • I want to read only the keys in a table. I tried this... try { HTable table = new HTable("myTable"); Scan scan = new Scan(); scan.addFamily(Bytes.toBytes("Info")); ResultScanner scanner = ...
    Something SomethingSomething Something
    Feb 3, 2011 at 6:01 am
    Feb 3, 2011 at 11:10 pm
  • Hi all, We have a hbase cluster with 10 region servers running HBase 0.90.0 + CDH3. We're now importing big data into HBase. During the process, 2 servers crashed, but after restaring them, they're ...
    Yi LiangYi Liang
    Feb 18, 2011 at 8:36 am
    Feb 25, 2011 at 8:02 am
  • Hello, I was wondering, if I can safely remove the .oldlogs folder. The table data I have has 1 TB , where as 2.5 TB (with replication 7.5 TB) for .oldlogs folder. I am using hbase-0.90.0 ...
    Charan kumarCharan kumar
    Feb 23, 2011 at 7:00 pm
    Feb 23, 2011 at 7:50 pm
  • Hi everyone, I am going to implement a facebook-like comments system (with main comments and their sub-comments), using HBase 0.90. I designed the storage of comments as follow: - Row key is ...
    Bui Ngoc SonBui Ngoc Son
    Feb 7, 2011 at 11:25 am
    Feb 7, 2011 at 7:37 pm
  • Hi, I need to upload the bulk load of data into the Hbase-0.89 using the Map Reduce program, I tried with the MapReduce program sample available in the Hbase-0.20.6 API documents. But when I used the ...
    Jason BourneJason Bourne
    Feb 2, 2011 at 6:33 am
    Feb 2, 2011 at 4:35 pm
  • I know I cannot have more than one master node for HDFS but what if I was to create two of them and put a Kemps Loadbalance in front of them and point to my load balancer for my stuff would something ...
    Joseph ColemanJoseph Coleman
    Feb 16, 2011 at 3:13 pm
    Mar 9, 2011 at 11:01 pm
  • Hey, I'm just testing our code to move over to 0.90 and I'm finding some issues with the map/reduce jobs we've written using TableInputFormat. We setup the jobs using ...
    DanDan
    Feb 23, 2011 at 1:57 pm
    Feb 28, 2011 at 11:57 am
  • I keep getting this error: Delivery to the following recipient failed permanently: [email protected] Technical details of permanent failure: Google tried to deliver your message, but it was ...
    Mark KerznerMark Kerzner
    Feb 24, 2011 at 6:36 pm
    Feb 24, 2011 at 7:23 pm
  • I have installed HBase0.20.6 successfully but I met the following problem when try to install HBase0.90.1. It always says zookeepee cannot be connected when we use the same configuration as ...
    Sun sfSun sf
    Feb 24, 2011 at 5:08 am
    Feb 24, 2011 at 7:20 am
  • Hi, I was going through the HBase architecture blog by Lars George ( http://www.larsgeorge.com/2009/10/hbase-architecture-101-storage.html) and I just wanted a clarification regarding how HBase reads ...
    Hari SreekumarHari Sreekumar
    Feb 20, 2011 at 2:39 pm
    Feb 21, 2011 at 7:07 am
  • Hi guys, I have $HBASE_HOME/conf on my hadoop classpath but still, my hbase-site.xml doesn't get picked up from that location. It seems to work only if I copy my hbase-site.xml to the ...
    Hari SreekumarHari Sreekumar
    Feb 11, 2011 at 8:05 pm
    Feb 14, 2011 at 5:58 pm
  • Hi, I am planning to implement the REST API to query my HBase tables in production. The documentation mentions that the stargate api is not production ready. What are the major issues in the REST api ...
    Hari SreekumarHari Sreekumar
    Feb 1, 2011 at 6:58 pm
    Feb 4, 2011 at 4:20 pm
  • Hi all not sure where to ask this question but here it goes. I have been playing with Hadoop for a while now in a test environment before we setup and deploy a productions environment. I am using ...
    Joseph ColemanJoseph Coleman
    Feb 1, 2011 at 3:51 pm
    Feb 2, 2011 at 12:04 am
  • We are using 0.20x hbase. We are seeing some big delays on the client's read. The server side stats shows about 2-3 ms, but on the client side we are seeing about 20ms. The network delay is ...
    BenchmarkBenchmark
    Feb 25, 2011 at 11:16 pm
    Feb 28, 2011 at 7:46 pm
  • I was wonder if put returns after writing the data into memory on two out of the three nodes letting my client continue so we don't have to wait for the memory to then go to disk. After all, if it is ...
    Hiller, Dean (Contractor)Hiller, Dean (Contractor)
    Feb 23, 2011 at 9:26 pm
    Feb 25, 2011 at 10:12 pm
  • I want to alter table 'cjjHTML' ,and do ti as follows,but throw IOE Version: 0.20.6, r965666, Mon Jul 19 16:54:48 PDT 2010 hbase(main):001:0 disable 'cjjHTML' 0 row(s) in 210.5140 seconds ...
    陈加俊陈加俊
    Feb 25, 2011 at 3:20 am
    Feb 25, 2011 at 5:53 pm
  • Hi All, I am new to Hbase, can anyone throw the light on the fact that why at the first point Hbase is invented even though the HDFS has the capability to do everything i.e. distributing the data, ...
    Som_shekharSom_shekhar
    Feb 7, 2011 at 12:52 pm
    Feb 9, 2011 at 12:46 am
  • I have hadoop/hbase running on a notebook as my dev env. I have everything set up to use localhost which is defined as 127.0.0.1 in my /etc/hosts (and removed other entries for localhost). The system ...
    GrailcatttGrailcattt
    Feb 1, 2011 at 3:16 pm
    Feb 5, 2011 at 6:34 am
  • Stack and I were chatting on IRC about settling with should get into 0.92 before pulling the trigger on the release. Stack thinks we need online region schema editing. I agree because per-table ...
    Andrew PurtellAndrew Purtell
    Feb 26, 2011 at 8:34 pm
    Feb 28, 2011 at 10:18 pm
  • Hi guys, I'm trying to install Hbase 0.90.1 on OS X 10.6.6 in psuedo-distributed mode for use on a laptop, as instructed on: http://blog.ibd.com/howto/hbase-hadoop-on-mac-ox-x/ AND ...
    Mark JareckiMark Jarecki
    Feb 27, 2011 at 11:18 am
    Feb 28, 2011 at 3:26 am
  • Hi all, from time to time we come to a sitation where .META. table seems to be stuck in some corrupted state. In particular, attempts to create more tables cause ERROR: ...
    Dmitriy LyubimovDmitriy Lyubimov
    Feb 23, 2011 at 8:03 pm
    Feb 25, 2011 at 12:47 am
  • How to limit the number of logs that producted by DailyRollingFileAppender ? I find the logs are exceeding disk apace limit.
    陈加俊陈加俊
    Feb 16, 2011 at 7:52 am
    Feb 24, 2011 at 7:25 am
  • What does this exception signify: org.apache.hadoop.hbase.client.RetriesExhaustedException: Trying to contact region server Some server, retryOnlyOne=true, index=0, islastrow=false, tries=9, ...
    Hari SreekumarHari Sreekumar
    Feb 22, 2011 at 2:28 pm
    Feb 23, 2011 at 7:30 pm
  • For search integration we need to, on server reboot scan over key values since the last Lucene commit, and add them to the index. Is there an efficient way to do this?
    Jason RutherglenJason Rutherglen
    Feb 18, 2011 at 2:50 pm
    Feb 18, 2011 at 6:12 pm
  • Hi, I am having the Map Reduce program for the uploading the Bulk data into the Hbase-0.89 from HDFS file system. I need unique row ID for every row (millions of rows). So that overwriting in the ...
    Praba karanPraba karan
    Feb 15, 2011 at 4:57 pm
    Feb 17, 2011 at 5:34 am
Feb 2011
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122 users for February 2011

Jean-Daniel Cryans: 89 posts Stack: 68 posts Ryan Rawson: 53 posts Ted Dunning: 38 posts Jason Rutherglen: 32 posts 陈加俊: 21 posts Mark Kerzner: 20 posts Peter Haidinyak: 19 posts Hari Sreekumar: 16 posts Andrew Purtell: 13 posts Lars George: 13 posts Praba karan: 13 posts Ted Yu: 13 posts Chris Tarnas: 12 posts Something Something: 12 posts Tsuna: 12 posts Charan kumar: 11 posts Jonathan Gray: 10 posts Vishal Kapoor: 10 posts Wei Shung Chung: 10 posts
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