[DRILL-5455] Sporadic JDBC connection failure (Drill 1.10)

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved

Environment

JDK 1.7

• Assignee: Unassigned
• Reporter: Rakesh
• Created: 01/May/17 19:06
• Updated: 01/May/17 19:06

Description

My invocation to get JDBC connection succeeds 8 out of 10 times and fails the other times with the below message. (Of course it's not predictable or reproducible hence don't know the circumstances to reproduce it):

JavaException: ../quartz/src/javapy/JavaPy.cpp:449: JavaException: java.sql.SQLException: Failure in connecting to Drill: oadd.org.apache.drill.exec.rpc.RpcException: Failure setting up ZK for client. ()
Java stacktrace:
at org.apache.drill.jdbc.impl.DrillConnectionImpl.<init>(DrillConnectionImpl.java:161)
at org.apache.drill.jdbc.impl.DrillJdbc41Factory.newDrillConnection(DrillJdbc41Factory.java:70)
at org.apache.drill.jdbc.impl.DrillFactory.newConnection(DrillFactory.java:69)
at oadd.org.apache.calcite.avatica.UnregisteredDriver.connect(UnregisteredDriver.java:143)
at org.apache.drill.jdbc.Driver.connect(Driver.java:72)
at java.sql.DriverManager.getConnection(DriverManager.java:571)
at java.sql.DriverManager.getConnection(DriverManager.java:233)