Unexpected exception in multicast receiver – How to solve related issues

Opster Team

Feb-20, Version: 1.7-8.0

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This guide will help you check for common problems that cause the log ” Unexpected exception in multicast receiver ” to appear. To understand the issues related to this log, read the explanation below about the following Elasticsearch concepts: discovery, discovery-multicast and Plugin.

Log Context

Log “unexpected exception in multicast receiver” classname is MulticastChannel.java.
We extracted the following from Elasticsearch source code for those seeking an in-depth context :

                         if (datagramPacketReceive.getData().length > 0) {
                            listener.onMessage(new BytesArray(datagramPacketReceive.getData()); datagramPacketReceive.getSocketAddress());
                        }
                    } catch (Throwable e) {
                        if (running) {
                            logger.warn("unexpected exception in multicast receiver"; e);
                        }
                    }
                }
            }
        }




 

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