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  1. JGroups
  2. JGRP-1827

Forked channel requires udp.xml file

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    • Icon: Bug Bug
    • Resolution: Done
    • Icon: Minor Minor
    • 3.4.4, 3.5
    • 3.4.1
    • None

      An exception is thrown when creating a fork channel if the stack file name is something other than udp.xml (in my case main.xml):

      final JChannel mainChannel = new JChannel("main.xml");
      final ForkChannel mbChannel = new ForkChannel(mainChannel,
      "main", "fork-mb");

      4-09 17:33:38.270: W/System.err(5478): java.io.FileNotFoundException: JGRP000003: file "udp.xml" not found
      04-09 17:33:38.270: W/System.err(5478): at org.jgroups.conf.ConfiguratorFactory.getXmlConfigurator(ConfiguratorFactory.java:211)
      04-09 17:33:38.270: W/System.err(5478): at org.jgroups.conf.ConfiguratorFactory.getStackConfigurator(ConfiguratorFactory.java:102)
      04-09 17:33:38.270: W/System.err(5478): at org.jgroups.JChannel.<init>(JChannel.java:172)
      04-09 17:33:38.270: W/System.err(5478): at org.jgroups.JChannel.<init>(JChannel.java:123)
      04-09 17:33:38.270: W/System.err(5478): at org.jgroups.fork.ForkChannel.<init>(ForkChannel.java:75)
      04-09 17:33:38.270: W/System.err(5478): at org.jgroups.fork.ForkChannel.<init>(ForkChannel.java:118)
      04-09 17:33:38.270: W/System.err(5478): at com.novawurks.jgroupstest.JGroupsTestActivity$JGroupsSetupThread.run(JGroupsTestActivity.java:119)

      If I have the stack named udp.xml then the exception is not thrown and everything works as expected. If I make a copy of main.xml named udp.xml (so both files are present) the exception is not thrown and everything works as expected.

      Contents of main.xml / udp.xml :

      <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xmlns="urn:org:jgroups"
          xsi:schemaLocation="urn:org:jgroups http://www.jgroups.org/schema/JGroups-3.3.xsd" >
      
          <UDP
              enable_diagnostics="true"
              ip_mcast="true"
              ip_ttl="${jgroups.udp.ip_ttl:8}"
              loopback="true"
              max_bundle_size="1400"
              max_bundle_timeout="5"
              mcast_port="${jgroups.udp.mcast_port:45588}"
              mcast_recv_buf_size="200K"
              mcast_send_buf_size="200K"
              oob_thread_pool.enabled="true"
              oob_thread_pool.keep_alive_time="5000"
              oob_thread_pool.max_threads="8"
              oob_thread_pool.min_threads="1"
              oob_thread_pool.queue_enabled="false"
              oob_thread_pool.queue_max_size="100"
              oob_thread_pool.rejection_policy="discard"
              thread_naming_pattern="cl"
              thread_pool.enabled="true"
              thread_pool.keep_alive_time="5000"
              thread_pool.max_threads="8"
              thread_pool.min_threads="2"
              thread_pool.queue_enabled="true"
              thread_pool.queue_max_size="10000"
              thread_pool.rejection_policy="discard"
              timer.keep_alive_time="3000"
              timer.max_threads="10"
              timer.min_threads="4"
              timer.queue_max_size="500"
              timer_type="new3"
              tos="8"
              ucast_recv_buf_size="200K"
              ucast_send_buf_size="200K" />
      
          <PING />
      
          <MERGE2
              max_interval="30000"
              min_interval="10000" />
      
          <FD_SOCK />
      
          <FD_ALL />
      
          <VERIFY_SUSPECT timeout="1500" />
      
          <BARRIER />
      
          <pbcast.NAKACK2
              discard_delivered_msgs="true"
              max_msg_batch_size="500"
              use_mcast_xmit="false"
              xmit_interval="500"
              xmit_table_max_compaction_time="30000"
              xmit_table_msgs_per_row="2000"
              xmit_table_num_rows="100" />
      
          <UNICAST3
              conn_expiry_timeout="0"
              max_msg_batch_size="500"
              xmit_interval="500"
              xmit_table_max_compaction_time="60000"
              xmit_table_msgs_per_row="2000"
              xmit_table_num_rows="100" />
      
          <pbcast.STABLE
              desired_avg_gossip="50000"
              max_bytes="4M"
              stability_delay="1000" />
      
          <pbcast.GMS
              join_timeout="3000"
              print_local_addr="true"
              view_bundling="true" />
      
          <UFC
              max_credits="2M"
              min_threshold="0.4" />
      
          <MFC
              max_credits="2M"
              min_threshold="0.4" />
      
          <FRAG frag_size="1000" />
      
          <pbcast.STATE_TRANSFER />
      
          <FORK>
      
              <fork-stack id="main" >
      
                  <config>
                      <CENTRAL_LOCK num_backups="2" />
                  </config>
              </fork-stack>
      
              <fork-stack id="lock" >
      
                  <config>
      
                      <CENTRAL_LOCK num_backups="2" />
      
                      <STATS />
                  </config>
              </fork-stack>
          </FORK>
      
      </config>
      

        1. main.xml
          3 kB
        2. fork-stacks.xml
          0.3 kB
        3. bla2.java
          1 kB

              rhn-engineering-bban Bela Ban
              jtnw_jira Jim Thomas (Inactive)
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                Created:
                Updated:
                Resolved: