使用impala做大數(shù)據(jù)量查詢distinct的時(shí)候報(bào)如下錯(cuò)誤

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WARNINGS: Create file /tmp/impala-scratch/24414dab2c19caca:e54b206c5ab149d_24414dab2c19caca:e54b206c5ab149f_91001337-9d70-4c93-84ce-e7916c1ae804 failed with errno=2 description=Error(2): No such file or directory
Backend 4:Create file /tmp/impala-scratch/24414dab2c19caca:e54b206c5ab149d_24414dab2c19caca:e54b206c5ab149f_91001337-9d70-4c93-84ce-e7916c1ae804 failed with errno=2 description=Error(2): No such file or directory

查閱文檔知道impala在大數(shù)據(jù)量處理時(shí)會(huì)用到磁盤保存數(shù)據(jù)

• By default, intermediate files used during large sort, join, aggregation, or analytic function operations are stored in the directory /tmp/impala-scratch. These files are removed when the operation finishes. (Multiple concurrent queries can perform operations that use the "spill to disk" technique, without any name conflicts for these temporary files.) You can specify a different location by starting the impalad daemon with the --scratch_dirs="path_to_directory" configuration option or the equivalent configuration option in the Cloudera Manager user interface. You can specify a single directory, or a comma-separated list of directories. The scratch directories must be on the local filesystem, not in HDFS. You might specify different directory paths for different hosts, depending on the capacity and speed of the available storage devices. Impala will not start if it cannot create or read and write files in the "scratch" directory. If there is less than 1 GB free on the filesystem where that directory resides, Impala still runs, but writes a warning message to its log.

直接到各個(gè)impalad節(jié)點(diǎn)上創(chuàng)建/tmp/impala-scratch目錄，并賦予讀寫權(quán)限

 mkdir /tmp/impala-scratch
 chmod 777 /tmp/impala-scratch

本文題目：impala大數(shù)據(jù)量查詢/tmp/impala-scratch創(chuàng)建異常
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