cloudera cdh

Original link: http://blog.itpub.net/30089851/viewspace-2136429/1. Log in to the NN machine, go to the Namenode Configuration folder of the latest serial number, view the log4j configuration of the current NN[Email protected] ~]# cd/var/run/cloudera-scm-agent/process/[Email protected] process]# LS-LRT.....................Drwxr-x--x 3 HDFs HDFs 380 Mar 20:40 372-hdfs-failovercontrollerDrwxr-x--x 3 HDFs HDFs 20:40 370-hdfs-namenodeDrwxr-x--x 3 HDFs HDFs

This error is always reported when the newly developed structured streaming is deployed to the cluster today:Slf4j:class path contains multiple slf4j bindings. Slf4j:found Binding in [jar:file:/data4/yarn/nm/filecache/25187/slf4j-log4j12-1.7.16.jar!/org/slf4j/impl/ Staticloggerbinder.class]slf4j:found Binding in [jar:file:/opt/cloudera/parcels/cdh-5.7.2-1.cdh5.7.2.p0.18/jars/ Slf4j-log4j12-1.7.5.jar!/org/sl

+00001+99999999999 ... 0043011990999991950051512004...9999999n9+00221+99999999999 ... 0043011990999991950051518004...9999999n9-00111+99999999999 ... 0043012650999991949032412004...0500001n9+01111+99999999999 ... 0043012650999991949032418004...0500001n9+01121+99999999999...0043012650999991949032418004...0500001n9+01221+ 99999999999 ...Second file: map.py#!usr/bin/pythonimport reimport sysfor Line in Sys.stdin: Val=line.strip () (year,temp) = (val[15:19],val[ 40:45]) print "%s\t%s"% (year

benchmark test, refer to http://www.tpc.org/tpcds/. 3 tpc-ds test The main steps of the Tpc-ds test are four parts for environment preparation, SQL statement compatibility testing, and statement modification, TPC-DS testing, and test results, where the SQL statement compatibility test will be performed under the condition that the 1GB data volume is set up with a virtual machine cluster. The Tpc-ds test is performed under 500GB data volume. 3.1 Environment Preparation 3.1.1 Local confi

This article is based on centos6.x + cdh5.x What is Phoenix Phoenix's team summed up Phoenix in a nutshell: "We put the SQL back in NoSQL" means: We put SQL into NoSQL again. The nosql here refers to HBase, which means that you can query hbase with SQL statements, and you might say, "Hive and Impala are OK." ”。 But Hive and Impala can also query text files, and Phoenix's feature is that it can only find hbase, and no other type is supported. But also because of this exclusive attitude, Phoenix i

Operating Environment CentOS 5.6 Hadoop HiveSqoop is a tool developed by the Clouder company that enables Hadoop technology to import and export data between relational databases and hdfs,hive.Shanghai still school Hadoop Big Data Training Group original, there are hadoop big Data technology related articles, please pay more attention!Problems you may encounter during use: Sqoop relies on zookeeper, so zookeeper_home must be configured in the environment variable. SQOOP-1.2.0-CDH3B4

MySQL Import into HDFs command:Sqoop import--connect Jdbc:mysql://192.168.0.161:3306/angel--username anqi-password anqi--table test2-- Fields-terminated-by ' t '-M 1FAQ 1:Warning:/opt/cloudera/parcels/cdh-5.12.0-1.cdh5.12.0.p0.29/bin/. /lib/sqoop/. /accumulo does not exist! Accumulo imports would fail.Please set $ACCUMULO _home to the root of your Accumulo installation.Solve:Mkdir/var/lib/accumuloExport Acc

Label:In cdh5.3, Spark, which already contains the sparksql, needs to be configured in the following steps to use the feature1) Ensure that the CLI and JDBC of hive are working properly2) Copy the Hive-site.xml to the spark_home/conf directory3) Add Hive's class library to SPARK classpath: Edit spark_home/bin/compute-classpath.sh fileAdd Classpath= "$CLASSPATH:/opt/cloudera/parcels/cdh-5.3.0-1.cdh5.3.0.p0.3

Impala online documentation describes Impala ODBC interface installation and configuration http://www.cloudera.com/content/cloudera-content/cloudera-docs/CDH5/latest/Impala/ Installing-and-using-impala/ciiu_impala_odbc.html Impala ODBC Driver: http://www.cloudera.com/content/support/en/downloads/connectors.html This paper explains the installation and use of Impala ODBC in centos-6.5-x86_64 environment. F

```Hadoop_home= "/opt/cloudera/parcels/cdh-5.6.0-1.cdh5.6.0.p0.45/bin/. /lib/hadoop "For f in $hadoop _home/hadoop-*.jar; DoHadoop_classpath=${hadoop_classpath}: $fDoneFor f in $hadoop _home/lib/*.jar; DoHadoop_classpath=${hadoop_classpath}: $fDoneHadoopvfs_home= "/home/work/tools/java/hadoop-client/hadoop-vfs"For f in $hadoopvfs _home/lib/*.jar; DoHadoop_classpath=${hadoop_classpath}: $fDoneExport Hadoop_c

, for example, HDFS, the performance does not increase significantly, because sinkgroup is a single thread, its process method will call each sink in turn to take data in the channel, and ensure that the processing is correct, so that the operation is sequential, however, if it is sent to the next level of flume agent, the take operation is sequential, but the write operation of the next level of agent is parallel, so it must be fast; 3. In fact, using loadbalance can play the role of failover

reproduce this problem in the test environment and run a sleep job cd /opt/cloudera/parcels/CDH/lib/hadoop-mapreduce;hadoop jar hadoop-mapreduce-client-*-tests.jar sleep -Dmapred.job.queue.name=sleep -m5 -r5 -mt 60000 -rt 30000 -recordt 1000 After you restart nodemanage, an error is reported.Analyze logs However, where can I find the AM log not found? We have configured "log aggregation" (yarn. log-aggrega