Details
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Bug
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Status: Resolved
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Major
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Resolution: Fixed
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4.13.1
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None
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None
Description
I'm using Phoenix 4.13 for CDH 5.11.2 parcel and enabling schemas made my code unusable.
I think that this is not a bug of the CDH release, but of all 4.13.x releases.
I have many parallel Phoenix connections and I always get the following exception:
Caused by: java.sql.SQLException: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.hbase.TableExistsException): SYSTEM:MUTEX at org.apache.phoenix.query.ConnectionQueryServicesImpl$12.call(ConnectionQueryServicesImpl.java:2492) at org.apache.phoenix.query.ConnectionQueryServicesImpl$12.call(ConnectionQueryServicesImpl.java:2384) at org.apache.phoenix.util.PhoenixContextExecutor.call(PhoenixContextExecutor.java:76) at org.apache.phoenix.query.ConnectionQueryServicesImpl.init(ConnectionQueryServicesImpl.java:2384) at org.apache.phoenix.jdbc.PhoenixDriver.getConnectionQueryServices(PhoenixDriver.java:255) at org.apache.phoenix.jdbc.PhoenixEmbeddedDriver.createConnection(PhoenixEmbeddedDriver.java:150) at org.apache.phoenix.jdbc.PhoenixDriver.connect(PhoenixDriver.java:221) at java.sql.DriverManager.getConnection(DriverManager.java:664) at java.sql.DriverManager.getConnection(DriverManager.java:270)
This is caused by the fact that all the times the SYSTEM tables are recreated, and this cannot be done simultaneously.
Trying to debug the issue I found that in ConnectionQueryServicesImpl.createSysMutexTable() the call to getSystemTableNames() always return an empty array and the SYSTEM:MUTEX table is always recreated.
This because getSystemTableNames() doesn't consider the case when system tables have namespace enabled. Right now that method tries to get all tables starting with SYSTEM.*, while it should try to get the list of SYSTEM:* tables..
I hope this could get fixed very soon,
Flavio
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