Question

我的脚本不断出现同样的错误

java.lang.RuntimeException: native snappy library not available: this version of libhadoop was built without snappy support

代码本身看起来像这样

WITH step1 AS(
  SELECT columns
  FROM t1 stg
  WHERE time_key < '2017-04-08' AND time_key >= DATE_ADD('2017-04-08', -31)
  GROUP BY columns
  HAVING conditions1
)
, step2 AS(
  SELECT columns
  FROM t2
  WHERE conditions2
)
, step3 AS(
  SELECT columns
  FROM stg
  JOIN comverse_sub
  ON conditions3
)
INSERT INTO TABLE t1 PARTITION(time_key = '2017-04-08')
SELECT columns
FROM step3
WHERE conditions4

我检查了是否安装了snappy

hadoop checknative -a

得到了

snappy:  true /usr/hdp/2.5.0.0-1245/hadoop/lib/native/libsnappy.so.1

我对tez的设置是

set tez.queue.name=adhoc;
set hive.execution.engine=tez;
set hive.tez.container.size=4096;
set hive.auto.convert.join=true;
set hive.exec.parallel=true;
set hive.tez.auto.reducer.parallelism=true;
SET hive.exec.compress.output=true;
SET tez.runtime.compress=true;
SET tez.runtime.compress.codec=org.apache.hadoop.io.compress.SnappyCodec;

我还应该注意，tez上的所有脚本都不会失败。一些工作。喜欢这个

WITH hist AS(
  SELECT columns
  FROM t1
  WHERE conditions1
)
INSERT INTO TABLE t1 PARTITION(time_key)
SELECT columns
FROM hist
INNER JOIN t2
  on conditions2
INNER JOIN t3
  ON conditions3
WHERE conditions4

为什么会这样？

我检查了this和this以及this。没有帮助。此外，当我在MR上运行脚本时，它们都可以正常工作。

Answer 1

好吧，我解决了。我只是不断添加设置，直到它工作。仍然不知道问题是什么，解决方案不是很好，但它暂时会做。

set tez.queue.name=adhoc;
set hive.execution.engine=tez;
set hive.tez.container.size=4096;
set hive.auto.convert.join=true;
set hive.exec.parallel=true;
set hive.tez.auto.reducer.parallelism=true;
SET hive.exec.compress.output=true;
SET tez.runtime.compress=true;
SET tez.runtime.compress.codec=org.apache.hadoop.io.compress.SnappyCodec;
SET das.reduce-tasks-per-node=12;
SET das.map-tasks-per-node=12;
SET das.job.map-task.memory=4096;
SET das.job.reduce-task.memory=4096;
SET das.job.application-manager.memory=4096;
SET tez.runtime.io.sort.mb=512;
SET tez.runtime.io.sort.factor=100;
set hive.tez.min.partition.factor=0.25;
set hive.tez.max.partition.factor=2.0;
set mapred.reduce.tasks = -1;

TEZ上的HIVE（java.lang.RuntimeException：本机snappy库不可用：此版本的libhadoop是在没有snappy支持的情况下构建的）

1 个答案: