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Search server fails to start with an error of the following type found in <APPIAN_HOME>\logs\search-server\search-server.log:
<APPIAN_HOME>\logs\search-server\search-server.log
[WARN ][org.elasticsearch.transport.netty] [Node localhost:9500] exception caught on transport layer [[id: 0xe02114e6, /127.0.0.1:46664 => /127.0.0.1:9500]], closing connectionjava.io.StreamCorruptedException: invalid internal transport message format, got (16,3,1,0)at org.elasticsearch.transport.netty.SizeHeaderFrameDecoder.decode(SizeHeaderFrameDecoder.java:63)
This happens due to the lack of disk space on the server which hosts the search server.
Add disk space and restart the search server. The hardware requirements documentation here will give a general idea on the hardware allotment for an Appian environment.
This article applies to all versions of Appian.
Last Reviewed: August 2018