- 部署Hadoop/Hive/OraLoader软件
- [[email protected] ~]$ tree -L 1
- ├── hadoop-2.6.2
- ├── hbase-1.1.2
- ├── hive-1.1.1
- ├── jdk1.8.0_65
- ├── oraloader-3.4.0
- 配置hive metastore
我们采用MySQL作为hive的metastore,创建MySQL数据库
- mysql> create database metastore DEFAULT CHARACTER SET latin1;
- Query OK, 1 row affected (0.00 sec)
- mysql> grant all on metastore.* TO ‘hive‘@‘server1‘ IDENTIFIED BY ‘123456‘;
- Query OK, 0 rows affected (0.00 sec)
- mysql> flush privileges;
- Query OK, 0 rows affected (0.00 sec)
- 配置hive-site.xml
- <property>
- <name>javax.jdo.option.ConnectionURL</name>
- <value>jdbc:mysql://server1:3306/metastore?createDatabaseIfNotExist=true</value>
- </property>
- <property>
- <name>javax.jdo.option.ConnectionDriverName</name>
- <value>com.mysql.jdbc.Driver</value>
- </property>
- <property>
- <name>javax.jdo.option.ConnectionUserName</name>
- <value>hive</value>
- </property>
- <property>
- <name>javax.jdo.option.ConnectionPassword</name>
- <value>123456</value>
- </property>
- <property>
- <name>mapreduce.framework.name</name>
- <value>yarn</value>
- </property>
- 配置Oracle Loader的配置文件
- <?xml version="1.0" encoding="UTF-8" ?>
- <configuration>
- <!-- Input settings -->
- <property>
- <name>mapreduce.inputformat.class</name>
- <value>oracle.hadoop.loader.lib.input.HiveToAvroInputFormat</value>
- </property>
- <property>
- <name>oracle.hadoop.loader.input.hive.databaseName</name>
- <value>default</value>
- </property>
- <property>
- <name>oracle.hadoop.loader.input.hive.tableName</name>
- <value>catalog</value>
- </property>
- <property>
- <name>mapred.input.dir</name>
- <value>/user/hive/warehouse/catalog</value>
- </property>
- <property>
- <name>oracle.hadoop.loader.input.fieldTerminator</name>
- <value>\u002C</value>
- </property>
- <!-- Output settings -->
- <property>
- <name>mapreduce.job.outputformat.class</name>
- <value>oracle.hadoop.loader.lib.output.JDBCOutputFormat</value>
- </property>
- <property>
- <name>mapreduce.output.fileoutputformat.outputdir</name>
- <value>oraloadout</value>
- </property>
- <!-- Table information -->
- <property>
- <name>oracle.hadoop.loader.loaderMap.targetTable</name>
- <value>catalog</value>
- </property>
- <property>
- <name>oracle.hadoop.loader.input.fieldNames</name>
- <value>CATALOGID,JOURNAL,PUBLISHER,EDITION,TITLE,AUTHOR</value>
- </property>
- <!-- Connection information -->
- <property>
- <name>oracle.hadoop.loader.connection.url</name>
- <value>jdbc:oracle:thin:@${HOST}:${TCPPORT}:${SID}</value>
- </property>
- <property>
- <name>TCPPORT</name>
- <value>1521</value>
- </property>
- <property>
- <name>HOST</name>
- <value>server1</value>
- </property>
- <property>
- <name>SID</name>
- <value>orcl</value>
- </property>
- <property>
- <name>oracle.hadoop.loader.connection.user</name>
- <value>baron</value>
- </property>
- <property>
- <name>oracle.hadoop.loader.connection.password</name>
- <value>baron</value>
- </property>
- </configuration>
- 创建Hive表
- CREATEEXTERNALTABLEcatalog(CATALOGID INT,JOURNAL STRING, PUBLISHER STRING,
- EDITION STRING,TITLE STRING,AUTHOR STRING) ROW FORMAT DELIMITED FIELDS
- TERMINATED BY ‘,‘ LINES TERMINATED BY ‘\n‘ STORED
- AS
- TEXTFILE LOCATION ‘/catalog‘;
- 使用Oracle Loader for Hadoop加载Hive表到Oracle数据库
这里需要注意两点:
1 必须添加Hive配置文件路径到HADOOP_CLASSPATH环境变量
2 必须命令行调用hive-exec-*.jar hive-metastore-*.jar libfb303*.jar
- export HADOOP_CLASSPATH=$HADOOP_CLASSPATH:$OLH_HOME/jlib/*:$HIVE_HOME/lib/*:$HIVE_CONF_DIR
- hadoop jar $OLH_HOME/jlib/oraloader.jar oracle.hadoop.loader.OraLoader -conf OraLoadJobConf-hive.xml -libjars $OLH_HOME/jlib/oraloader.jar,$HIVE_HOME/lib/hive-exec-1.1.1.jar,$HIVE_HOME/lib/hive-metastore-1.1.1.jar,$HIVE_HOME/lib/libfb303-0.9.2.jar
输出结果如下:
Oracle Loader for Hadoop Release 3.4.0 - Production
Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/home/hadoop/hadoop-2.6.2/share/hadoop/common/lib/slf4j-log4j12-1.7.5.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/hadoop/hive-1.1.1/lib/hive-jdbc-1.1.1-standalone.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.slf4j.impl.Log4jLoggerFactory]
15/12/08 04:53:51 INFO loader.OraLoader: Oracle Loader for Hadoop Release 3.4.0 - Production
Copyright (c) 2011, 2015, Oracle and/or its affiliates. All rights reserved.
15/12/08 04:53:51 INFO loader.OraLoader: Built-Against: hadoop-2.2.0 hive-0.13.0 avro-1.7.3 jackson-1.8.8
15/12/08 04:53:51 INFO Configuration.deprecation: mapreduce.outputformat.class is deprecated. Instead, use mapreduce.job.outputformat.class
15/12/08 04:53:51 INFO Configuration.deprecation: mapred.output.dir is deprecated. Instead, use mapreduce.output.fileoutputformat.outputdir
15/12/08 04:54:23 INFO Configuration.deprecation: mapred.submit.replication is deprecated. Instead, use mapreduce.client.submit.file.replication
15/12/08 04:54:24 INFO loader.OraLoader: oracle.hadoop.loader.loadByPartition is disabled because table: CATALOG is not partitioned
15/12/08 04:54:24 INFO output.DBOutputFormat: Setting reduce tasks speculative execution to false for : oracle.hadoop.loader.lib.output.JDBCOutputFormat
15/12/08 04:54:24 INFO Configuration.deprecation: mapred.reduce.tasks.speculative.execution is deprecated. Instead, use mapreduce.reduce.speculative
15/12/08 04:54:26 WARN loader.OraLoader: Sampler is disabled because the number of reduce tasks is less than two. Job will continue without sampled information.
15/12/08 04:54:26 INFO loader.OraLoader: Submitting OraLoader job OraLoader
15/12/08 04:54:26 INFO client.RMProxy: Connecting to ResourceManager at server1/192.168.56.101:8032
15/12/08 04:54:28 INFO metastore.HiveMetaStore: 0: Opening raw store with implemenation class:org.apache.hadoop.hive.metastore.ObjectStore
15/12/08 04:54:28 INFO metastore.ObjectStore: ObjectStore, initialize called
15/12/08 04:54:29 INFO DataNucleus.Persistence: Property hive.metastore.integral.jdo.pushdown unknown - will be ignored
15/12/08 04:54:29 INFO DataNucleus.Persistence: Property datanucleus.cache.level2 unknown - will be ignored
15/12/08 04:54:31 INFO metastore.ObjectStore: Setting MetaStore object pin classes with hive.metastore.cache.pinobjtypes="Table,StorageDescriptor,SerDeInfo,Partition,Database,Type,FieldSchema,Order"
15/12/08 04:54:33 INFO DataNucleus.Datastore: The class "org.apache.hadoop.hive.metastore.model.MFieldSchema" is tagged as "embedded-only" so does not have its own datastore table.
15/12/08 04:54:33 INFO DataNucleus.Datastore: The class "org.apache.hadoop.hive.metastore.model.MOrder" is tagged as "embedded-only" so does not have its own datastore table.
15/12/08 04:54:34 INFO DataNucleus.Datastore: The class "org.apache.hadoop.hive.metastore.model.MFieldSchema" is tagged as "embedded-only" so does not have its own datastore table.
15/12/08 04:54:34 INFO DataNucleus.Datastore: The class "org.apache.hadoop.hive.metastore.model.MOrder" is tagged as "embedded-only" so does not have its own datastore table.
15/12/08 04:54:34 INFO DataNucleus.Query: Reading in results for query "[email protected]" since the connection used is closing
15/12/08 04:54:34 INFO metastore.MetaStoreDirectSql: Using direct SQL, underlying DB is MYSQL
15/12/08 04:54:34 INFO metastore.ObjectStore: Initialized ObjectStore
15/12/08 04:54:34 INFO metastore.HiveMetaStore: Added admin role in metastore
15/12/08 04:54:34 INFO metastore.HiveMetaStore: Added public role in metastore
15/12/08 04:54:35 INFO metastore.HiveMetaStore: No user is added in admin role, since config is empty
15/12/08 04:54:35 INFO metastore.HiveMetaStore: 0: get_table : db=default tbl=catalog
15/12/08 04:54:35 INFO HiveMetaStore.audit: ugi=hadoop ip=unknown-ip-addr cmd=get_table : db=default tbl=catalog
15/12/08 04:54:36 INFO mapred.FileInputFormat: Total input paths to process : 1
15/12/08 04:54:36 INFO metastore.HiveMetaStore: 0: Shutting down the object store...
15/12/08 04:54:36 INFO HiveMetaStore.audit: ugi=hadoop ip=unknown-ip-addr cmd=Shutting down the object store...
15/12/08 04:54:36 INFO metastore.HiveMetaStore: 0: Metastore shutdown complete.
15/12/08 04:54:36 INFO HiveMetaStore.audit: ugi=hadoop ip=unknown-ip-addr cmd=Metastore shutdown complete.
15/12/08 04:54:37 INFO mapreduce.JobSubmitter: number of splits:2
15/12/08 04:54:37 INFO mapreduce.JobSubmitter: Submitting tokens for job: job_1449544601730_0015
15/12/08 04:54:38 INFO impl.YarnClientImpl: Submitted application application_1449544601730_0015
15/12/08 04:54:38 INFO mapreduce.Job: The url to track the job: http://server1:8088/proxy/application_1449544601730_0015/
15/12/08 04:54:49 INFO loader.OraLoader: map 0% reduce 0%
15/12/08 04:55:07 INFO loader.OraLoader: map 100% reduce 0%
15/12/08 04:55:22 INFO loader.OraLoader: map 100% reduce 67%
15/12/08 04:55:47 INFO loader.OraLoader: map 100% reduce 100%
15/12/08 04:55:47 INFO loader.OraLoader: Job complete: OraLoader (job_1449544601730_0015)
15/12/08 04:55:47 INFO loader.OraLoader: Counters: 49
File System Counters
FILE: Number of bytes read=395
FILE: Number of bytes written=370110
FILE: Number of read operations=0
FILE: Number of large read operations=0
FILE: Number of write operations=0
HDFS: Number of bytes read=6005
HDFS: Number of bytes written=1861
HDFS: Number of read operations=9
HDFS: Number of large read operations=0
HDFS: Number of write operations=5
Job Counters
Launched map tasks=2
Launched reduce tasks=1
Data-local map tasks=2
Total time spent by all maps in occupied slots (ms)=29809
Total time spent by all reduces in occupied slots (ms)=36328
Total time spent by all map tasks (ms)=29809
Total time spent by all reduce tasks (ms)=36328
Total vcore-seconds taken by all map tasks=29809
Total vcore-seconds taken by all reduce tasks=36328
Total megabyte-seconds taken by all map tasks=30524416
Total megabyte-seconds taken by all reduce tasks=37199872
Map-Reduce Framework
Map input records=3
Map output records=3
Map output bytes=383
Map output materialized bytes=401
Input split bytes=5610
Combine input records=0
Combine output records=0
Reduce input groups=1
Reduce shuffle bytes=401
Reduce input records=3
Reduce output records=3
Spilled Records=6
Shuffled Maps =2
Failed Shuffles=0
Merged Map outputs=2
GC time elapsed (ms)=1245
CPU time spent (ms)=14220
Physical memory (bytes) snapshot=757501952
Virtual memory (bytes) snapshot=6360301568
Total committed heap usage (bytes)=535298048
Shuffle Errors
BAD_ID=0
CONNECTION=0
IO_ERROR=0
WRONG_LENGTH=0
WRONG_MAP=0
WRONG_REDUCE=0
File Input Format Counters
Bytes Read=0
File Output Format Counters
Bytes Written=1620
- 问题
Oracle Loader for Hadoop的问题是出现未加载到数据库成功的行并没有报错提示