使用sqoop更新hive表

Question

我試圖從MySQL數據庫中sqoop數據，其中我有一個主鍵和last_updated字段的表。 我試圖基本上獲取最近更新的所有記錄並覆蓋蜂巢倉庫中的當前記錄

我試過以下命令

sqoop job --create trainingDataUpdate -- import \
--connect jdbc:mysql://localhost:3306/analytics \
--username user \
--password-file /sqooproot.pwd \
--incremental lastmodified \
--check-column last_updated \
--last-value '2015-02-13 11:08:18' \
--table trainingDataFinal \
--merge-key id \
--direct --hive-import \
--hive-table analytics.trainingDataFinal \
--null-string '\\N' \
--null-non-string '\\N' \
--map-column-hive last_updated=TIMESTAMP

我收到以下錯誤

15/02/13 14:07:41 INFO hive.HiveImport: FAILED: SemanticException Line 2:17 Invalid path ''hdfs://dev.cluster.com:8020/user/hdfs/_sqoop/13140640000000520_32226_hwhjobdev_cluster.com_trainingDataFinal'': No files matching path hdfs://dev.cluster.com:8020/user/hdfs/_sqoop/13140640000000520_32226_dev.cluster.com_trainingDataFinal
15/02/13 14:07:42 ERROR tool.ImportTool: Encountered IOException running import job: java.io.IOException: Hive exited with status 64
    at org.apache.sqoop.hive.HiveImport.executeExternalHiveScript(HiveImport.java:385)
    at org.apache.sqoop.hive.HiveImport.executeScript(HiveImport.java:335)
    at org.apache.sqoop.hive.HiveImport.importTable(HiveImport.java:239)
    at org.apache.sqoop.tool.ImportTool.importTable(ImportTool.java:514)
    at org.apache.sqoop.tool.ImportTool.run(ImportTool.java:605)
    at org.apache.sqoop.tool.JobTool.execJob(JobTool.java:228)
    at org.apache.sqoop.tool.JobTool.run(JobTool.java:283)
    at org.apache.sqoop.Sqoop.run(Sqoop.java:143)
    at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70)
    at org.apache.sqoop.Sqoop.runSqoop(Sqoop.java:179)
    at org.apache.sqoop.Sqoop.runTool(Sqoop.java:218)
    at org.apache.sqoop.Sqoop.runTool(Sqoop.java:227)
    at org.apache.sqoop.Sqoop.main(Sqoop.java:236)

我想通過包含--merge-key它可以用新記錄覆蓋舊記錄。 有沒有人知道這是否可以在sqoop？

Answer 1

我不認為sqoop可以做到這一點。 --merge-key僅由sqoop-merge使用而不是導入

另見http://sqoop.apache.org/docs/1.4.0-incubating/SqoopUserGuide.html#id1764421