Error: java.io.IOException: Can't export data, please check failed map task logs
    at org.apache.sqoop.mapreduce.TextExportMapper.map(TextExportMapper.java:112)
    at org.apache.sqoop.mapreduce.TextExportMapper.map(TextExportMapper.java:39)
    at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:146)
    at org.apache.sqoop.mapreduce.AutoProgressMapper.run(AutoProgressMapper.java:64)
    at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:787)
    at org.apache.hadoop.mapred.MapTask.run(MapTask.java:341)
    at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:164)
    at java.security.AccessController.doPrivileged(Native Method)
    at javax.security.auth.Subject.doAs(Subject.java:415)
    at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1657)
    at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158)
Caused by: java.io.IOException: java.sql.BatchUpdateException: Deadlock found when trying to get lock; try restarting transaction
    at org.apache.sqoop.mapreduce.AsyncSqlRecordWriter.write(AsyncSqlRecordWriter.java:220)
    at org.apache.sqoop.mapreduce.AsyncSqlRecordWriter.write(AsyncSqlRecordWriter.java:46)
    at org.apache.hadoop.mapred.MapTask$NewDirectOutputCollector.write(MapTask.java:658)
    at org.apache.hadoop.mapreduce.task.TaskInputOutputContextImpl.write(TaskInputOutputContextImpl.java:89)
    at org.apache.hadoop.mapreduce.lib.map.WrappedMapper$Context.write(WrappedMapper.java:112)
    at org.apache.sqoop.mapreduce.TextExportMapper.map(TextExportMapper.java:84)
    ... 10 more
Caused by: java.sql.BatchUpdateException: Deadlock found when trying to get lock; try restarting transaction
    at com.mysql.jdbc.SQLError.createBatchUpdateException(SQLError.java:1167)
    at com.mysql.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:1772)
    at com.mysql.jdbc.PreparedStatement.executeBatchInternal(PreparedStatement.java:1262)
    at com.mysql.jdbc.StatementImpl.executeBatch(StatementImpl.java:970)
    at org.apache.sqoop.mapreduce.AsyncSqlOutputFormat$AsyncSqlExecThread.run(AsyncSqlOutputFormat.java:231)
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLTransactionRollbackException: Deadlock found when trying to get lock; try restarting transaction
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
    at com.mysql.jdbc.Util.getInstance(Util.java:408)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:951)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3973)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3909)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2527)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2680)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2487)
    at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1858)
    at com.mysql.jdbc.PreparedStatement.executeUpdateInternal(PreparedStatement.java:2079)
    at com.mysql.jdbc.PreparedStatement.executeBatchSerially(PreparedStatement.java:1756)
    ... 3 more
 

sqoop匯出資料從hive到mysql報錯

sqoop配置如下：

bin/sqoop export \
--connect jdbc:mysql://ip:3306/database?tinyInt1isBit=false \
--username xxx \
--password xxx \
--table xxx \
--update-key dt,xxx,xxx \
--update-mode updateonly \
--export-dir /xxx/xxx \
--fields-terminated-by '\001' \
-m 4

設定發現：

--update-key 設定為--update-mode updateonly模式時，則報錯 。

--update-key 設定為--update-mode allowinsert模式時，不報錯。

看日誌報錯資訊為mysql死鎖問題，但未發現具體原因發生在什麼地方 。

排錯後，發現mysql中沒有使用聯合索引，當在mysql中增加對應的mysql聯合ENGINE=InnoDB索引時，不在報錯。

alter table tmp_table add key d_x_x_x (dt,xx,xx,xx,xx,xx) ;