Issue is resolved. Was not casting to string when fetching from Map. On Saturday, February 9, 2019, 3:09:48 PM PST, Krishnanand Khambadkone <kkhambadk...@yahoo.com.INVALID> wrote: Hi Kunal, I am trying to query spark application event json data. Here is my query. I am using drill version 1.15.0. I am using a custom UDF in the query.
select s.application_id, get_spark_attrs(s.spark_event,'spark.executor.memory') as spark_attributes from dfs.`sparkapplicationevent.json` s where (REGEXP_REPLACE(REGEXP_REPLACE(substr(s.spark_event,11), '[^0-9A-Za-z]"', ''),'(".*)','') = 'SparkListenerEnvironmentUpdate' or REGEXP_REPLACE(REGEXP_REPLACE(substr(s.spark_event,11), '[^0-9A-Za-z]"', ''),'(".*)','') = 'SparkListenerApplicationStart' or REGEXP_REPLACE(REGEXP_REPLACE(substr(s.spark_event,11), '[^0-9A-Za-z]"', ''),'(".*)','') = 'SparkListenerApplicationEnd') group by application_id, spark_attributes order by application_id; On Saturday, February 9, 2019, 1:42:57 PM PST, Kunal Khatua <ku...@apache.org> wrote: This message is eligible for Automatic Cleanup! (ku...@apache.org) Add cleanup rule | More info Hi Krishnanand The mailing lists don't allow attachments. Please provide the Drill version, query, data source and a link to where the relevant part of the log can be downloaded. The message by itself is not useful, especially without a stacktrace. On 2/9/2019 11:39:49 AM, Krishnanand Khambadkone <kkhambadk...@yahoo.com.invalid> wrote: Any idea why such an error would be thrown from custom UDF. I am using jackson json parser in this UDF. Error: SYSTEM ERROR: CompileException: Line 80, Column 24: Assignment conversion not possible from type "java.lang.Object" to type "java.lang.String" Fragment 0:0 Please, refer to logs for more information.