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  1. MariaDB Connector/J
  2. CONJ-1247

possible race condition resulting in an NPE

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Details

    • Bug
    • Status: Closed (View Workflow)
    • Critical
    • Resolution: Fixed
    • None
    • 3.5.4
    • Failover
    • None

    Description

      A possible NPE can occurs when pools create multiple connections on multiple threads (so all pool but HikariCP)

      This might results in : 

      Caused by: java.lang.NullPointerException: Cannot invoke "java.lang.Long.longValue()" because the return value of "java.util.concurrent.ConcurrentMap.get(Object)" is null
      		 
          at org.mariadb.jdbc.export.HaMode.getHostWithLessConnections(HaMode.java:146)
      		 
          at org.mariadb.jdbc.export.HaMode$4.getAvailableHost(HaMode.java:62)
      		 
          at org.mariadb.jdbc.client.impl.MultiPrimaryClient.tryConnectToAvailableHost(MultiPrimaryClient.java:116)
      		 
          at org.mariadb.jdbc.client.impl.MultiPrimaryClient.connectHost(MultiPrimaryClient.java:90)
      		 
          at org.mariadb.jdbc.client.impl.MultiPrimaryClient.<init>(MultiPrimaryClient.java:71)
      		 
          at org.mariadb.jdbc.Driver.connect(Driver.java:86)
      		 
          at org.mariadb.jdbc.Driver.connect(Driver.java:104)
      		 
          at org.mariadb.jdbc.Driver.connect(Driver.java:29)

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            diego dupin Diego Dupin
            diego dupin Diego Dupin
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              Updated:
              Resolved:

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