Questions tagged [hbase]
HBase is the Hadoop database. Use it when you need random, realtime read/write access to your Big Data. This project's goal is the hosting of very large tables -- billions of rows X millions of columns -- atop clusters of commodity hardware.
29 questions
2 votes
0 answers
483 views
Unable to start Apache Kylin
Good morning, I am trying to install Kylin-3.1.1 on a remote linux server, I made sure it had all software requirments and I installed already the following programms: apache-hive-3.1.2-bin , kylin-3....
- 21
1 vote
0 answers
92 views
Backup and Restore strategy in Hbase cluster
I have just started with Hbase cluster. I have a Hbase cluster with 2 master nodes and 4 slave nodes. I have one hbase table where huge data is populated everyday so the disk gets filled quickly. I ...
- 111
1 vote
2 answers
3k views
NoNode for HBase master pseudodistributed mode
I am using Ubuntu 18.04, hadoop 3.1.3 and hbase 2.2.1 To me it seems like my hadoop and HBase are not configured correctly to interact. When I through the HBase shell try to create a table it yields ...
- 133
2 votes
1 answer
2k views
What is the significance of hbase.regionserver.ipc.numActiveHandler metric?
The ipc numActiveHandler is documented here as: The number of RPC handlers actively servicing requests I am looking for a more detailed explanation about the significance of that metric. I am ...
- 217
1 vote
2 answers
1k views
HBase replication not working
I have two HDFS clusters with HBase on top of it, cluster_1 and cluster_2. On cluster_1 (All nodes) I have edited the hbase-site.xml adding this: <property> <name>hbase.replication</...
- 237
1 vote
0 answers
97 views
CDH Community Edition Upgrade from 5.7 to 5.13 without Cloudera Express or Cloudera Enterprise
I am having a cluster like below - 3 Hbase Master (1 Active & 2 standby) 4 Region Servers 4 Data Nodes 1 Primary & 1 Secondary Name Node 3 Journal Node 4 Nodemanager 3 Resource Manager (1 ...
- 353
2 votes
1 answer
3k views
HBase Kerberos SaslException: GSS initiate failed (Mechanism level: Failed to find any Kerberos tgt)
I am trying to set up Kerberos authentication for HBase using this http://hbase.apache.org/0.94/book/security.html documentation and have very little progress so far. HBase 1.1.1 from Apache without ...
- 121
1 vote
0 answers
498 views
opentsdb service hang under load
I `m trying to put data into openTSDB with RESTful api the openTSDB provided. But the opentsdb process always hang there after a few minutes. It can successfully put some data then becomes slower and ...
- 11
11 votes
2 answers
1k views
Moving the SecondaryName Node in a Cloudera HBase Cluster
I deployed the secondary namenode on the same machine is my main namenode: This is wrong for performance and durability reasons (the secondary name node isn't a hot spare, but it does have a copy of ...
- 85.9k
7 votes
2 answers
2k views
HBASE Space Used Started Climbing Rapidly
Update 4,215: After looking at space usage inside of hdfs, I see that .oldlogs is using a lot of space: 1485820612766 /hbase/.oldlogs So new questions: What is it? How do I clean it up? How do I ...
- 85.9k
3 votes
1 answer
963 views
Linux Network tuning to prevent tcp rcvpruned and backlogdrop?
My datanodes in my hbase cluster are triggering some tcp rcvpruned and backlog drops from time to time: It seems to be there are at least two angles to approach this at: Tune HBase/HDFS etc... so that ...
- 85.9k
0 votes
1 answer
79 views
How to know which script or executable is linked with a metric in ganglia?
I have just started to explore ganglia and my question is "How to know which script or executable is linked with a metric in ganglia?" The fact is that I don't know much about ganglia. I have good ...
- 101
3 votes
2 answers
4k views
Disable The Under Replicated Blocks Alert in Cloudera Manager
I have a single server Hbase cluster that I am only using as the sink end of HBase replication. Therefore I don't want to replicate any blocks within this cluster (since the source has replicated ...
- 85.9k
2 votes
0 answers
751 views
HBase issue with *some* regionservers connecting
I have an HBase cluster that is working, and I'm attempting to add some new servers to the cluster, but "SocketException: Invalid argument" and "FailedServerException: This server is in the failed ...
- 329
0 votes
0 answers
464 views
hadoop hbase environment variables
I tried to setup a 4 node Hadoop cluster using CDH4.7. The cluster is up and running fine and when I submit a word count MR job it completed successfully but when I am submitting an MR job to insert ...
- 1
2 votes
0 answers
534 views
Hbase block locality index is always 0
I have a Hbase (v 0.94.19 with Hadoop 1.2.1) setup with one master machine and two region servers. Each region server has 16 GB heap (6.4 GB cache, 4.0 GB memstore) and 1.6 TB (2 X 800 GB) SSD disk ...
- 135
8 votes
1 answer
13k views
Could not start ZK at requested port of 2181, while export HBASE_MANAGES_ZK=false
Problem The first aim was to run HBase standalone. Navigating to ip:60010/master-status is succesfull once HBase has been started. The second aim is to run a distinct ZooKeeper quorum. ZooKeeper has ...
- 6,105
4 votes
1 answer
676 views
Does Cloudera Manager need ongoing Root Access?
When installing Cloudera Manager 4, it asks for the root password on a passwordless sudo user to install packages. Does this account need to be retained, or is it just for initial setup?
- 85.9k
4 votes
0 answers
2k views
java.lang.NullPointerException When Doing A Read in HDFS
I have had a 10 node HBase cluster up and running for the past 4 months. The cluster was setup on VMs in a corporate environment which I do not control, but everything has been working great...until ...
- 253
0 votes
0 answers
307 views
OpenTSDB Web interface showing nothing other than header and footer
NOTE: I moved the question from stackoverflow to serverfault as this question didn't attract attention. I have a temporary OpenTSDB and hbase hosted on a aws micro server. http://54.72.180.169:4242/ ...
- 101
1 vote
0 answers
515 views
Hbase catalog tables custom location
I have a Hbase cluster running with 2 region servers, each hosting around 100 regions. I can see that the ROOT and META tables are automatically assigned to separate region servers. My system is read ...
- 135
3 votes
1 answer
12k views
HBase: hbck can't fix region inconsistencies
We are using stock HBase 0.94.4 on Hadoop 1.0.4. One of HBase regions stuck in transition state and I got the following when I run /opt/hbase/bin/hbase hbck: ERROR: Region { meta => ...
- 8,109
1 vote
1 answer
336 views
Java process failure (hadoop, hbase)
Anytime I am running hadoop/hbase process from a command prompt I get an error: /usr/local/hadoop/bin/hadoop: line 320: /usr/lib/jvm/jdk1.7.0/bin/java: cannot execute binary file /usr/local/hadoop/...
- 75
4 votes
1 answer
12k views
Can't connect to HDFS in pseudo-distributed mode
I followed the instructions here for installing hadoop in pseudo-distributed mode. However, I'm having trouble connecting to HDFS. When I execute this command : ./hadoop fs -ls / I get a directory ...
- 193
1 vote
1 answer
719 views
What version of HDFS is compatible with HBase stable?
HBase stable is currently hbase-0.90.4, what version(s) of HDFS is it compatible with?
- 2,515
1 vote
1 answer
252 views
scribe log analysis
I have decided to use scribe to log all the error and request details in my site for analysis. How can I use the scribe log data to analyze the data. Is there any tool for this or scribe server ...
- 111
-2 votes
4 answers
6k views
why http://server:60010 web page for the running HBase Master
I installed by : wget http://archive.cloudera.com/cdh/3/hbase-0.90.3-cdh3u1.tar.gz This is my hbase_site.xml <property> <name>hbase.master</name> <value>localhost:...
- 1,019
8 votes
1 answer
8k views
Is it possible to Managing 20 TB data using MySQL?
I am working in a project and my job is to build a database system to manage about 60,000,000,000 data entries. The project background is I have to do real-time storage for large number of messages ...
lemuria
4 votes
6 answers
1k views
How to achieve zero down time
For an application we want to achieve zero database and application down time using Active Active configuration. Our dB is Oracle Following are my questions: How can we achieve active active ...
Hiral Lakdavala