
Venu Reddy
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Activity overview
Latest activity by Venu Reddy-
Venu Reddy created an article,
Browse All Data Throws NoSuchMethodError with org.slf4j.helpers.MessageFormatter.format
Problem While browsing all data with an artifact, it resulted in the following error: java.lang.NoSuchMethodError: org.slf4j.helpers.MessageFormatter.format(Ljava/lang/String;Ljava/lang/Object;)L...
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Venu Reddy created an article,
How Does One Get Javadoc for Datameer SDK?
Question I would like to get Javadoc for Datameer SDK to develop custom plugins, where can I find it? Answer In <Datameer_Install_Directory>, there should be a file with name plugin-sdk-<version>.z...
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Venu Reddy created an article,
How To Tune JVM Parameters
Goal It may be necessary to tune Java Virtual Machine parameters to address specific java errors or to improve performance. Where can these parameters be applied? Learn Locate a file named das-env....
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Venu Reddy created an article,
How to Validate Upgrade Process Succeeded?
There are two steps in the upgrade process. 1 Database schema upgrade Executing upgrade script for Datameer Detecting Datameer schema version from current database ..Current database version is: 6....
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Venu Reddy created an article,
Custom Plugin Fails to Load: Unsupported major.minor version 52.0
Problem After deploying a custom plugin within DAS, it resulted in an error: Caused by: java.lang.RuntimeException: Task: Error: <Package_Name containing the class> : Unsupported major.minor versio...
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Venu Reddy created an article,
Datameer job fails with (Service: Amazon S3; Status Code: 403; Error Code: AccessDenied)
Problem When one runs a Datameer job connecting to an Amazon S3 bucket, it may fail with an error similar to: ERROR [2018-05-15 23:22:43.398] [JobExecutionPlanRunner] (ClusterSession.java:252) - F...
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Venu Reddy created an article,
How to Find What Triggered a Job?
Problem How to find what conditions/actions triggered a specific Datameer job? Solution Run the following SQL statement against DAP database select * from dap_job_execution where id=<job_executio...
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Venu Reddy created an article,
Upgrade_db.sh Fails During Upgrade from Version 5 to 6
Problem When upgrade_db.sh is run, it fails with ERROR 1050 (42S01) at line 1: Table 'permission_fks' already exists Abort, /home/datameer/current/upgrade_transformed/20180323151720/upgrade-6.0.0-D...
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Venu Reddy created an article,
OUTER LEFT JOIN Doesn't Display All Values From Left Sheet
Problem Create a Workbook with few Join operations (For e.g. 3 OUTER_LEFT and 2 INNER Joins). One of OUTER_LEFT Joins doesn't show expected behavior and returns only matching values from 2 Sheets ...
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Venu Reddy created an article,
How Do I Find Up/Downtime of Datameer Service?
Question I would like to find out when Datameer service was brought up/down last time, is there a way? Answer Take a look at the file jetty.state located under <Datameer_Home> directory. If the las...