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88 discussions - 467 posts

  • I'm importing 2TB of generated HFiles to HBase and I constantly get the following errors: Caused by ...
    Jianshi HuangJianshi Huang
    Sep 5, 2014 at 3:16 pm
    Sep 23, 2014 at 6:37 am
  • Hi, I developed an distributed scan, I create an thread for each region. After that, I've tried to get some times Scan vs DistributedScan. I have disabled blockcache in my table. My cluster has 3 ...
    Guillermo OrtizGuillermo Ortiz
    Sep 10, 2014 at 8:40 am
    Sep 16, 2014 at 10:52 am
  • While I am aware that HBase does not have native support for nested structures, surely there are some of you that have thought through this use case carefully. Our particular use case is likely ...
    Stephen BoeschStephen Boesch
    Sep 8, 2014 at 9:06 pm
    Sep 12, 2014 at 7:23 am
  • Hi, I'm currently putting everything into one table (to make cross reference queries easier) and there's one CF which contains rowkeys very different to the rest. Currently it works well, but I'm ...
    Jianshi HuangJianshi Huang
    Sep 6, 2014 at 4:50 pm
    Sep 9, 2014 at 9:02 pm
  • Hello, I'm trying to copy data between Hbase clusters on different versions. I am using : /usr/bin/hbase org.apache.hadoop.hbase.snapshot.ExportSnapshot -chuser hbase -chgroup hadoop -snapshot ...
    GautamGautam
    Sep 15, 2014 at 11:59 pm
    Sep 16, 2014 at 11:10 am
  • It's a little wired when I ran the standalone HBase cluster from trunk. I notice that the default RegionServer info port is not 16010. And when I explicitly set hbase.regionserver.info.port, it ...
    TobeTobe
    Sep 3, 2014 at 2:51 pm
    Sep 5, 2014 at 1:02 am
  • I have found that our RegionServers connect to the ZooKeeper frequently. They seems to constantly establish the session, close it and reconnect the ZooKeeper. Here is the log for both server and ...
    TobeTobe
    Sep 18, 2014 at 8:51 am
    Sep 24, 2014 at 11:42 am
  • I have a map/reduce job that is consistently failing with timeouts. The failing mapper log files contain a series of records similar to those below. When I look at the hbase and hdfs logs (on foo.net ...
    Brian JeltemaBrian Jeltema
    Sep 7, 2014 at 3:50 pm
    Sep 12, 2014 at 11:32 am
  • Hi, I'm trying to use HBase TTL feature here is table DDL: hbase(main):004:0 describe 'item_to_item_similar_rec' DESCRIPTION ENABLED {NAME = 'my_table', FAMILIES = [{NAME = 'd', DATA_BLOCK_ENCODING = ...
    Serega SheypakSerega Sheypak
    Sep 2, 2014 at 6:41 pm
    Sep 2, 2014 at 7:30 pm
  • I constantly get the following errors when I tried to add splits to a table. org.apache.hadoop.hbase.ipc.RemoteWithExtrasException(org.apache.hadoop.hbase.NotServingRegionException) ...
    Jianshi HuangJianshi Huang
    Sep 17, 2014 at 9:40 am
    Sep 17, 2014 at 7:45 pm
  • Hi All, I have an hbase table with multiple cfs (say c1,c2,c3).Each of this column family has a column 'message' which is about 5K.What I need to do is to grab only the first 1000 Characters of this ...
    Nishanth SNishanth S
    Sep 11, 2014 at 5:37 pm
    Sep 15, 2014 at 4:58 pm
  • Hello everyone, I have been running some experiments to see the effect of locking overhead in HBase. For this, I am comparing the throughput difference between these two schema. Schema1: rowkey- ...
    Abhishek1015Abhishek1015
    Sep 27, 2014 at 4:56 am
    Oct 13, 2014 at 3:50 am
  • Hi, We are thinking of adding some new 64-bit servers to run RegionServers to our 32-bit HBase cluster. Anything we should worry about or pay extra attention to? Thanks, Otis -- Monitoring * Alerting ...
    Otis GospodneticOtis Gospodnetic
    Sep 15, 2014 at 8:38 pm
    Sep 20, 2014 at 3:46 am
  • Hi, We are using Hbase batch API and with 0.98.1 we get the following exception on using batch() with Increment ———————————— org.apache.hadoop.hbase.exceptions.OperationConflictException: The ...
    Vinay GuptaVinay Gupta
    Sep 17, 2014 at 1:04 am
    Sep 17, 2014 at 9:44 pm
  • Hi everyone, This question may have been asked many times but I would really appreciate if some one can help me on how to go about this. Currently my hbase table consists of about 10 columns per row ...
    Nishanth SNishanth S
    Sep 25, 2014 at 4:58 pm
    Sep 29, 2014 at 5:08 pm
  • I exported a snapshot to another cluster, same version of all software. A restore_snapshot on the target system hung and eventually timed out, I think due to file ownership issues. I restored hbase ...
    Brian JeltemaBrian Jeltema
    Sep 25, 2014 at 4:21 pm
    Sep 25, 2014 at 5:55 pm
  • Hi, everyone. Here's a strange one, at least to me. I'm doing some performance profiling, and as a rudimentary test I've been using YCSB to drive HBase (originally 0.98.3, recently updated to ...
    Josh WilliamsJosh Williams
    Sep 17, 2014 at 10:22 pm
    Sep 20, 2014 at 2:56 am
  • I'm trying to track down a problem I'm having running map/reduce jobs against snapshots. Can someone explain the difference between files stored in: /apps/hbase/data/archive/data/default and files ...
    Brian JeltemaBrian Jeltema
    Sep 6, 2014 at 1:10 pm
    Sep 8, 2014 at 11:17 am
  • Hello guys I am using the hbase java api to connect to hbase remotely, but when I executed the java code, got |MasterNotRunningException|. When I debugged the code, I came to know that zookeeper was ...
    SACHINGUPTASACHINGUPTA
    Sep 29, 2014 at 12:44 pm
    Sep 29, 2014 at 4:10 pm
  • Could tombstone purges be independent of purging deleted cells and KEEP_DELETED_CELLS setting? In my use case, I do not want to keep deleted cells, but I do need to keep the tombstones around ...
    James EstesJames Estes
    Sep 22, 2014 at 5:40 pm
    Sep 24, 2014 at 5:19 am
  • So suppose I want to capture metadata about a table across all of the regions for that table. Has anyone used a coprocessor to capture a region’s statistics and push them up to ZK where its stored by ...
    Michael SegelMichael Segel
    Sep 4, 2014 at 10:48 pm
    Sep 5, 2014 at 7:56 pm
  • Hi, I'm seeing an issue on our hbase cluster which is preventing snapshots from working. So far the only way i can get it working again is to restart all the regionservers which is not ideal. I'm ...
    Ian BrooksIan Brooks
    Sep 23, 2014 at 9:28 am
    Oct 29, 2014 at 2:34 pm
  • Hi, We have a use case that involves ETL on data coming from several different sources using pig. We plan to store the final output table in HBase. What will be the performance impact if we do a join ...
    Krishna KalyanKrishna Kalyan
    Sep 27, 2014 at 3:32 am
    Sep 29, 2014 at 6:27 am
  • Dear all: Is there any ways to monitor or profiling the memory usage of region server heap? For example, how many are assigned to memstore, blockcache, storefileindex or else. Thanks. -- *Regards,* ...
    牛兆捷牛兆捷
    Sep 3, 2014 at 6:53 am
    Sep 5, 2014 at 8:02 am
  • Hi folks, I'm having trouble using copyTable to seed an existing tables data to a replication peer. Surely its an oversight in configuration on our part, but I've scoured the web and doc's for a ...
    Iain wrightIain wright
    Sep 27, 2014 at 12:12 am
    Oct 1, 2014 at 10:30 am
  • Hello all, I just want to delete all the data in the table, but keep the schema and all regions. If I use Delete API to do this, it seem too slow. If I use Truncate, the new table has only one ...
    Weichen YEWeichen YE
    Sep 28, 2014 at 1:54 am
    Sep 28, 2014 at 6:21 am
  • Hi there, I have a use case that I need to do bulk look up in a table of size 100 million key value pairs. Where key is the unique ID (product id), and the value is inventory history (time series) ...
    Bin WangBin Wang
    Sep 22, 2014 at 3:15 pm
    Sep 22, 2014 at 7:16 pm
  • Hi I'm wondering if it's safe to use user inputed values as column qualifiers. I realised there maybe a sensible size limit, but that's easily checked. The scenario is if you wanted to store simple ...
    TedTed
    Sep 30, 2014 at 9:19 pm
    Oct 3, 2014 at 4:06 pm
  • Hello, Can anyone give me a concrete use case for ttl deletions? I mean in which situation we should set ttl property? regards! Yong
    YonghuYonghu
    Sep 26, 2014 at 3:20 pm
    Sep 30, 2014 at 1:16 pm
  • Hi All, Is there a way to let scanner finish scanning all regions without throwing this kind of error? I'm using scan with filter MUST_PASS_ALL, and I observe that whenever the result data is smaller ...
    Henry HungHenry Hung
    Sep 29, 2014 at 7:06 am
    Sep 30, 2014 at 4:07 am
  • I did my hadoop, habse and zookeeper configuration with help of apeche documents. now i stared learning hbase but i seen lot of java code(psudo code, like put, get,delete ) on these documents but i ...
    Satya For USatya For U
    Sep 23, 2014 at 4:33 pm
    Sep 23, 2014 at 11:53 pm
  • Hi, Our customers were using Hbase-0.94 through thrift1 (C++ clients). Now HBase is getting upgraded to 0.98.x I see that thrift2 development is going on ...
    Kiran Kumar.M.RKiran Kumar.M.R
    Sep 18, 2014 at 10:56 am
    Sep 20, 2014 at 5:16 pm
  • Hi, I can't find mention of this issue on the Jira. Is it known? I think that if a split of the HFiles is required, LoadIncrementalHFiles should create the new HFiles with the correct permissions to ...
    Daisy ZhouDaisy Zhou
    Sep 16, 2014 at 9:27 pm
    Sep 19, 2014 at 11:49 pm
  • Hi, Just trying to get a feel for what HBase apps look like. I assume that the Java client API dominates? What other APIs are popular? Are the apps mostly deployed on the same cluster as HBase or ...
    Tapper, GunnarTapper, Gunnar
    Sep 11, 2014 at 3:51 am
    Sep 19, 2014 at 6:48 pm
  • hi i have a huge map object, which comes from the solr query results. map contains around 400-500 key-value pairs is it a gud way to store the entire map as a value in the column. is there any ...
    Yeshwanth kumarYeshwanth kumar
    Sep 17, 2014 at 8:39 pm
    Sep 18, 2014 at 8:25 pm
  • Hi, I'm running hbase 0.98.1 When using TableMapReduceUtil to init a MR job on a snapshot, I got an error : org.apache.hadoop.hbase.TableInfoMissingException: No table descriptor file under ...
    Guangle FanGuangle Fan
    Sep 10, 2014 at 6:14 pm
    Sep 10, 2014 at 8:12 pm
  • Hi all, we store serialised hyperloglog object into hbase by use of coprocessor, and the size distribution is below: Row size (bytes): min = 4279.00 max = 770757.00 mean = 67340.24 stddev = 153968.88 ...
    Bi,hongyu—mikeBi,hongyu—mike
    Sep 4, 2014 at 6:30 am
    Sep 4, 2014 at 1:16 pm
  • Hi Matteo, Following your steps, I was able to build binary package hbase-2. 0.0-SNAPSHOT-bin.tar.gz ..today I used the same to run hbase locally it is giving error when i tried to start with ...
    @Sanjiv Singh@Sanjiv Singh
    Sep 1, 2014 at 12:02 pm
    Sep 3, 2014 at 11:27 pm
  • hi i am running HBase 0.94.20 on Hadoop 2.2.0 i am working on a mapreduce job, where it reads input from a table and writes the processed back to that table and to another table, i am using ...
    Yeshwanth kumarYeshwanth kumar
    Sep 2, 2014 at 5:26 pm
    Sep 3, 2014 at 2:53 pm
  • This is my first attempt to run the unit tests on the 0.98.X branch: and the failures I see are: Running org.apache.hadoop.hbase.io.hfile.bucket.TestBucketCache Tests run: 8, Failures: 0, Errors: 2, ...
    Stephen BoeschStephen Boesch
    Sep 27, 2014 at 8:22 pm
    Sep 28, 2014 at 1:41 am
  • Hi there, To get good read performance, should the region server be installed on every data node? (Thinking about data locality here) thanks thomas
    Thomas KwanThomas Kwan
    Sep 26, 2014 at 2:03 pm
    Sep 26, 2014 at 7:07 pm
  • Hi All, We were using TTL feature to delete the hbase data since we were able to define the retention days at column family level.But right now we have a requirement for storing data with different ...
    Nishanth SNishanth S
    Sep 24, 2014 at 6:12 pm
    Sep 25, 2014 at 12:31 am
  • Hi, The value of my table is a Map. I want to know how can I get only value(no any key sent from the region server) or get a subset of the value(Map) from hbase. BR, Kevin.
    Dai, KevinDai, Kevin
    Sep 19, 2014 at 2:34 am
    Sep 19, 2014 at 3:18 am
  • Hi, anybody knows why I can't skip flush when taking snapshot ? snapshot 'aaa', 'aaa_snapshot', {SKIP_FLUSH = true} NameError: uninitialized constant SKIP_FLUSH without {SKIP_FLUSH = true}, the ...
    Guangle FanGuangle Fan
    Sep 10, 2014 at 12:34 am
    Sep 10, 2014 at 12:53 am
  • Hi, According to the HBAse definitive guide, I need to change to change hbase-env.sh and put my jars in hbase's classpath, then I also need to restart hbase daemon to make my customized filters ...
    Jianshi HuangJianshi Huang
    Sep 9, 2014 at 6:27 am
    Sep 9, 2014 at 3:52 pm
  • Hi *HBase : 0.98.1 CDH 5.1.1* When i am trying to attach CoPro jar to table in RS logs i am getting following Exceptions ERROR org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost:* Failed to ...
    Vikram Singh ChandelVikram Singh Chandel
    Sep 30, 2014 at 11:53 am
    Oct 1, 2014 at 9:32 am
  • Hi, I'm relatively new to HBase and maven. Currently I'm trying to add dependency for hbase-0.98.6.1-hadoop2.jar to my application. But when I run 'mvn package' after adding the dependency, it fails ...
    innowireless TaeYun Kiminnowireless TaeYun Kim
    Sep 30, 2014 at 12:20 pm
    Sep 30, 2014 at 3:31 pm
  • Hi We are trying to migrating to* HBase 0.98.1(CDH 5.1.1) from 0.94.6*, to use *Bucket Cache + CoProcessor* and to check the performance improvement but looking into the API i found that a lot has ...
    Vikram Singh ChandelVikram Singh Chandel
    Sep 29, 2014 at 8:49 am
    Sep 30, 2014 at 8:34 am
  • I am trying to manually attach the sources for the HBaseTestingUtil to my Intellij/maven project. Here is the maven central repo url where the jars seem to be located ...
    Stephen BoeschStephen Boesch
    Sep 27, 2014 at 11:54 pm
    Sep 28, 2014 at 2:42 am
  • Hi All. I am using 0.98.6 HBase. I observed that when I have the following value set in my hbase-site.xml file <property <name hbase.regionserver.wal.encryption</name <value false</value </property ...
    Ashish singhiAshish singhi
    Sep 25, 2014 at 5:36 am
    Sep 25, 2014 at 2:27 pm
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101 users for September 2014

Ted Yu: 75 posts Jianshi Huang: 29 posts Michael Segel: 20 posts Brian Jeltema: 19 posts Jean-Marc Spaggiari: 17 posts Tobe: 15 posts Nishanth S: 14 posts Guillermo Ortiz: 13 posts Lars hofhansl: 13 posts Esteban Gutierrez: 10 posts Qiang Tian: 9 posts Sean Busbey: 9 posts Serega Sheypak: 9 posts Stephen Boesch: 9 posts 牛兆捷: 9 posts Andrew Purtell: 8 posts Matteo Bertozzi: 8 posts Anoop John: 7 posts Gautam: 6 posts Michael Stack: 6 posts
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