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How to insert nano seconds in the TimestampType in Spark?

avatar
Explorer

Spark Version : 1.6.1 I have a text table in hive having `timestamp` datatype with nanoseconds precision. Hive Table Schema:

c_timestamp     timestamp   

Hive Table data:

00:00:00.000000001
23:59:59.999999999

But as per the docs, from Spark 1.5 Timestamps are now stored at a precision of 1us, rather than 1ns Sample code:

SparkConf conf = new SparkConf(true).setMaster("yarn-cluster").setAppName("SAMPLE_APP");
SparkContext sc = new SparkContext(conf);
HiveContext hc = new HiveContext(sc);
DataFrame df = hc.table("testdb.tbl1");

Data is truncated to microseconds. Is there any way to use nanoseconds here?

1 ACCEPTED SOLUTION

avatar
Guru

@Devender Yadav, It seems that TimeStampType do not support nanoseconds yet.

https://issues.apache.org/jira/browse/SPARK-17914 is opened to track this issue.

You might want to use some other data type like String to store this data if you require nanoseconds data.

View solution in original post

1 REPLY 1

avatar
Guru

@Devender Yadav, It seems that TimeStampType do not support nanoseconds yet.

https://issues.apache.org/jira/browse/SPARK-17914 is opened to track this issue.

You might want to use some other data type like String to store this data if you require nanoseconds data.