While testing how to handle es-cluster connectivity issues I ran into a
serious problem. The java api node client is connected and then the ES
server is killed. The application hangs in some bulkRequest, but this call
never returns. It also does not return, even if the cluster was started. On
console this exception is shown:
Exception in thread
"elasticsearch[event-collector/12240@amnesia][generic][T#2]"
org.elasticsearch.cluster.block.ClusterBlockException: blocked by:
[SERVICE_UNAVAILABLE/1/state not recovered /
initialized];[SERVICE_UNAVAILABLE/2/no master];
at
org.elasticsearch.cluster.block.ClusterBlocks.globalBlockedException(ClusterBlocks.java:138)
at
org.elasticsearch.cluster.block.ClusterBlocks.globalBlockedRaiseException(ClusterBlocks.java:128)
at
org.elasticsearch.action.bulk.TransportBulkAction.executeBulk(TransportBulkAction.java:197)
at
org.elasticsearch.action.bulk.TransportBulkAction.access$000(TransportBulkAction.java:65)
at
org.elasticsearch.action.bulk.TransportBulkAction$1.onFailure(TransportBulkAction.java:143)
at
org.elasticsearch.action.support.TransportAction$ThreadedActionListener$2.run(TransportAction.java:119)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
I am wondering that this scenario does not work. Any other scenario e.g.
shutdown 1-of-2 nodes is transparently handled. But now the client
application seems hanging for ever.
And ideas?
regards,
markus
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