使用Oozie添加Hive分區

Question

我正在使用HPD-2.4.2，並嘗試使用Oozie協調器作業將分區添加到外部Hive表中。 我創建了一個協調器，該協調器每天會觸發以下工作流程：

<workflow-app name="addPartition" xmlns="uri:oozie:workflow:0.4">
  <start to="hive"/>
  <action name="hive">
   <hive2 xmlns="uri:oozie:hive2-action:0.1">
    <job-tracker>${jobTracker}</job-tracker>
    <name-node>${nameNode}</name-node>
    <jdbc-url>jdbc:hive2://${jdbcPath}</jdbc-url>
    <password>yarn</password>
    <script>${appPath}/addPartition.q</script>
    <param>nameNode=${nameNode}</param>
    <param>dt=${dt}</param>
    <param>path=${path}</param>
   </hive2>
   <ok to="end" />
   <error to="fail" />
  </action>
  <kill name="fail">
   <message>
    Workflow failed, error message[${wf:errorMessage(wf:lastErrorNode())}]
   </message>
  </kill>
  <end name="end" />
</workflow-app>

執行的腳本包含

CREATE EXTERNAL TABLE IF NOT EXISTS visits (sid BIGINT, os STRING, browser STRING, visit_time TIMESTAMP)
  PARTITIONED BY (dt STRING) 
  STORED AS PARQUET;

ALTER TABLE visits ADD PARTITION(dt = '${dt}') LOCATION   '${nameNode}/data/parquet/visitors/${path}'; 

如果我運行作業，則會創建表，但不會添加任何分區。 在紗線日志中，我發現：

Beeline command arguments :
         -u
         jdbc:hive2://localhost:10000/default
         -n
         yarn
         -p
         yarn
         -d
         org.apache.hive.jdbc.HiveDriver
         --hivevar
         nameNode=hdfs://bigdata01.local:8020
         --hivevar
         dt=2016-01-05
         --hivevar
         path=2016/01/05
         -f
         addPartition.q
         -a
         delegationToken
         --hiveconf
         mapreduce.job.tags=oozie-1b3b2ee664df7ac9ee436379d784955a

Fetching child yarn jobs
tag id : oozie-1b3b2ee664df7ac9ee436379d784955a
Child yarn jobs are found - 
=================================================================

>>> Invoking Beeline command line now >>>
[...]
0: jdbc:hive2://localhost:10000/default> ALTER TABLE visits ADD    PARTITION(dt = '${dt}') LOCATION  '${nameNode}/data/parquet/visitors/${path}';

似乎未替換ALTER TABLE中的參數，要檢查這一點，我嘗試直接從CLI調用beeline：

beeline -u jdbc:hive2://localhost:10000/default -n yarn -p yarn -d org.apache.hive.jdbc.HiveDriver --hivevar nameNode=hdfs://bigdata01.local:8020 --hivevar dt="2016-01-03" --hivevar path="2016/01/03" -e "ALTER TABLE visits ADD PARTITION(dt='${dt}') LOCATION '${nameNode}/data/parquet/visitors/${path}';"

導致錯誤：

Connecting to jdbc:hive2://localhost:10000/default
Connected to: Apache Hive (version 1.2.1000.2.4.2.0-258)
Driver: Hive JDBC (version 1.2.1000.2.4.2.0-258)
Transaction isolation: TRANSACTION_REPEATABLE_READ
Error: Error while processing statement: FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask. partition spec is invalid; field dt does not exist or is empty (state=08S01,code=1)

如果我運行不帶參數的alter語句

beeline -u jdbc:hive2://localhost:10000/default -n yarn -p yarn -d org.apache.hive.jdbc.HiveDriver -e "ALTER TABLE visits ADD PARTITION(dt='2016-01-03') LOCATION 'hdfs://bigdata01.local:8020/data/parquet/visitors/2016/01/03';"

或打開已定義hivevars的beeline控制台並執行alter語句

beeline -u jdbc:hive2://localhost:10000/default -n yarn -p yarn -d org.apache.hive.jdbc.HiveDriver --hivevar nameNode=hdfs://bigdata01.local:8020 --hivevar dt="2016-01-03" --hivevar path="2016/01/03"
0: jdbc:hive2://localhost:10000/default>  ALTER TABLE visits ADD PARTITION(dt = '${dt}') LOCATION '${nameNode}/data/parquet/visitors/${path}';

分區已創建。

我哪里錯了？

更新：

hive2操作中的參數值在oozie.properties文件和coordinator.xml中定義

<property>
  <name>nameNode</name>
  <value>${nameNode}</value>
</property> 
<property>
 <name>dt</name>                
 <value>${coord:formatTime(coord:dateOffset(coord:nominalTime(), -1,'DAY'),'yyyy-MM-dd')}</value>
</property>
<property>
  <name>path</name>                    
  <value>${coord:formatTime(coord:dateOffset(coord:nominalTime(), -1,'DAY'),'yyyy/MM/dd')}</value>
</property>

在紗線日志中，您會發現

Parameters:
------------------------
nameNode=hdfs://bigdata01.local:8020
dt=2016-01-05
path=2016/01/05 

在hive2動作的beeline調用中將它們設置為hivevars之前。

Answer 1

感謝您的幫助，但我放棄了。 我將使用ssh動作而不是hive2動作來執行帶有靜態alter語句的beeline。

<ssh xmlns="uri:oozie:ssh-action:0.1">
  <host>${sshUser}@${sshHost}</host>
  <command>"beeline"</command>
  <args>-u</args>
  <args>jdbc:hive2://localhost:10000/default</args>
  <args>-n</args>
  <args>yarn</args>
  <args>-p</args>
  <args>yarn</args>
  <args>-d</args>
  <args>org.apache.hive.jdbc.HiveDriver</args>
  <args>-e</args>
  <args>"ALTER TABLE visits ADD PARTITION(dt='${dt}') LOCATION '${nameNode}/data/raw/parquet/visitors/${path}';"</args>
  <capture-output />
</ssh>

Answer 2

終於發現了問題。 您必須使用雙引號而不是單引號;-)

$ beeline -u jdbc:hive2://localhost:10000/default -n yarn -p yarn -d org.apache.hive.jdbc.HiveDriver --hivevar foo=bar -e "SELECT '${foo}' as foo;     

+------+--+
| foo  |  
+------+--+
|      |
+------+--+  

beeline -u jdbc:hive2://localhost:10000/default -n yarn -p yarn -d org.apache.hive.jdbc.HiveDriver --hivevar foo=bar -e 'SELECT "${foo}" as foo;'  

+------+--+
| foo  |
+------+--+
| bar  |
+------+--+

beeline -u jdbc:hive2://localhost:10000/default -n yarn -p yarn -d org.apache.hive.jdbc.HiveDriver --hivevar foo=bar -f selectFoo.q

+------+--+
| foo  |
+------+--+
| bar  |
+------+--+