[infinispan-dev] JGroups Error: JGRP000029 observed with "JGroups 3.6.8 + Infinispan 8.2.2":

Bela Ban bban at redhat.com
Mon Aug 22 04:01:24 EDT 2016


1: What does the NPE cause? Incorrect behavior? This is in the discovery 
protocol, so I don't think it is a severe error.

2: If you change the JGroups code to print the exception (or set a 
breakpoint and debug) we'd know what the cause is.

3: Does Infinispan 8.2.2 use JGroups 3.6.8, or did you upgrade JGroups?

4: Is this reproduceable? If yes, goto step #2



On 20/08/16 09:38, Manohar SL wrote:
> Hi Bela Ban,
>
> We have been trying to use JGroups 3.6.8 with Infinispan 8.2.2., in this context we are observing an issue with the Replication Mode of Infinispan usage.
> We see the below exception from Jgroups:
> JGRP000029: failed sending message to <>:7800 (100 bytes): java.lang.NullPointerException, headers: TCPGOSSIP: [type=GET_MBRS_REQ, cluster=x-cluster], TP: [cluster_name=x-cluster]
>
> The configurations used are highlighted below:
>
> Infinispan config
>
> <infinispan>
>
>      <jgroups>
>
>          <stack-file name="configurationFile" path="config/jgroups.xml"/>
>
>      </jgroups>
>
>      <cache-container>
>
>          <transport cluster="x-cluster" stack="configurationFile" />
>
> <replicated-cache name="transactional-type" mode="SYNC">
>
>              <transaction mode="NON_XA"  locking="OPTIMISTIC" transaction-manager-lookup="org.infinispan.transaction.lookup.JBossStandaloneJTAManagerLookup" auto-commit="true"  />
>
> <locking acquire-timeout="60000"/>
>
> <expiration lifespan="43200000"/>
>
>          </replicated-cache>
>
>      </cache-container>
>
> </infinispan>
>
>
>
> Jgroups configuration
>
> <!--
>
>      TCP based stack, with flow control and message bundling. This is usually used when IP
>
>      multicasting cannot be used in a network, e.g. because it is disabled (routers discard multicast).
>
>      Note that TCP.bind_addr and TCPPING.initial_hosts should be set, possibly via system properties, e.g.
>
>      -Djgroups.bind_addr=192.168.5.2 and -Djgroups.tcpping.initial_hosts=192.168.5.2[7800]".
>
>      author: Bela Ban
>
> -->
>
> <config xmlns="urn:org:jgroups"
>
>          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>
> xsi:schemaLocation="urn:org:jgroups  http://www.jgroups.org/schema/jgroups-3.6.xsd">
>
>
>
>    <TCP loopback="true"
>
> bind_addr="${jgroups.tcp.address:127.0.0.1}"
>
> bind_port="${jgroups.tcp.port:7800}"
>
> recv_buf_size="${tcp.recv_buf_size:20M}"
>
> send_buf_size="${tcp.send_buf_size:640K}"
>
> discard_incompatible_packets="true"
>
> max_bundle_size="64K"
>
> max_bundle_timeout="30"
>
> enable_bundling="true"
>
>         use_send_queues="true"
>
> sock_conn_timeout="300"
>
> timer_type="new"
>
> timer.min_threads="4"
>
> timer.max_threads="10"
>
> timer.keep_alive_time="3000"
>
> timer.queue_max_size="500"
>
> thread_pool.enabled="true"
>
> thread_pool.min_threads="2"
>
> thread_pool.max_threads="30"
>
> thread_pool.keep_alive_time="60000"
>
> thread_pool.queue_enabled="false"
>
> thread_pool.queue_max_size="100"
>
> thread_pool.rejection_policy="discard"
>
> oob_thread_pool.enabled="true"
>
>         oob_thread_pool.min_threads="2"
>
> oob_thread_pool.max_threads="30"
>
> oob_thread_pool.keep_alive_time="60000"
>
> oob_thread_pool.queue_enabled="false"
>
> oob_thread_pool.queue_max_size="100"
>
> oob_thread_pool.rejection_policy="discard"/>
>
>
>
>      <!-- <TCP_NIO -->
>
> <!-- bind_port="7800" -->
>
> <!-- bind_interface="${jgroups.tcp_nio.bind_interface:bond0}" -->
>
> <!-- use_send_queues="true" -->
>
> <!-- sock_conn_timeout="300" -->
>
> <!--         reader_threads="3" -->
>
> <!-- writer_threads="3" -->
>
> <!-- processor_threads="0" -->
>
> <!-- processor_minThreads="0" -->
>
> <!-- processor_maxThreads="0" -->
>
> <!-- processor_queueSize="100" -->
>
> <!--         processor_keepAliveTime="9223372036854775807"/> -->
>
>      <TCPGOSSIP initial_hosts="${jgroups.tcpgossip.initial_hosts}"/>
>
>      <!--    <TCPPING async_discovery="true" initial_hosts="${jgroups.tcpping.initial_hosts}"
>
>              port_range="2" timeout="3000" /> -->
>
>      <MERGE2 max_interval="30000" min_interval="10000"/>
>
>      <FD_SOCK/>
>
>      <FD timeout="3000" max_tries="3"/>
>
>      <VERIFY_SUSPECT timeout="1500"/>
>
>      <pbcast.NAKACK
>
> use_mcast_xmit="false"
>
> retransmit_timeout="300,600,1200,2400,4800"
>
> discard_delivered_msgs="false"/>
>
>      <UNICAST2 timeout="300,600,1200"
>
> stable_interval="5000"
>
> max_bytes="1m"/>
>
>      <pbcast.STABLE stability_delay="500" desired_avg_gossip="5000" max_bytes="1m"/>
>
>      <pbcast.GMS print_local_addr="false" join_timeout="3000" view_bundling="true"/>
>
>      <UFC max_credits="200k" min_threshold="0.20"/>
>
>      <MFC max_credits="200k" min_threshold="0.20"/>
>
>      <FRAG2 frag_size="60000"/>
>
>      <RSVP timeout="60000" resend_interval="500" ack_on_delivery="false" />
>
> </config>
>
> Any help on this would be really great.
> Kindly let us know if you would need any further information on this.
>
> Regs,
> Manohar.
>

-- 
Bela Ban, JGroups lead (http://www.jgroups.org)



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