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Michael Han commented on ZOOKEEPER-2549: ---------------------------------------- bq. Sorry, which class are you referring to for debug ? NIOServerCnxn.java (L720-727). But since you mentioned, I checked again and it looks like the change is copied from NettyServerCnxn which uses the pattern {{if (LOG.isDebugEnabled())}}. So I think we either change both by using {{LOG.debug}} directly and removing {{if (LOG.isDebugEnabled())}} , or leave both with current form. > As NettyServerCnxn.sendResponse() allows all the exception to bubble up it > can stop main ZK requests processing thread > ---------------------------------------------------------------------------------------------------------------------- > > Key: ZOOKEEPER-2549 > URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2549 > Project: ZooKeeper > Issue Type: Bug > Components: server > Affects Versions: 3.5.1 > Reporter: Yuliya Feldman > Assignee: Yuliya Feldman > Attachments: ZOOKEEPER-2549.patch, ZOOKEEPER-2549.patch, > zookeeper-2549-1.patch > > > As NettyServerCnxn.sendResponse() allows all the exception to bubble up it > can stop main ZK requests processing thread and make Zookeeper server look > like it is hanging, while it just can not process any request anymore. > Idea is to catch all the exceptions in NettyServerCnxn.sendResponse() , > convert them to IOException and allow it propagating up -- This message was sent by Atlassian JIRA (v6.3.4#6332)