线程被挂在java.net.SocketInputStream.socketRead0(Native Method)上,有人知道发生了什么吗? [英] A thread was hanged on java.net.SocketInputStream.socketRead0(Native Method), anyone know what happend?
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问题描述
"[GMQMsgConsumeThread:113.105.152.146:22300, queue:Q_COOMIX_IMG_META]" prio=10 tid=0x08431000 nid=0x774c runnable [0x6e6b5000]
java.lang.Thread.State: RUNNABLE
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:129)
at com.mysql.jdbc.util.ReadAheadInputStream.fill(ReadAheadInputStream.java:113)
at com.mysql.jdbc.util.ReadAheadInputStream.readFromUnderlyingStreamIfNecessary(ReadAheadInputStream.java:160)
at com.mysql.jdbc.util.ReadAheadInputStream.read(ReadAheadInputStream.java:188)
- locked <0x83f593e0> (a com.mysql.jdbc.util.ReadAheadInputStream)
at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:1910)
at com.mysql.jdbc.MysqlIO.readPacket(MysqlIO.java:501)
at com.mysql.jdbc.MysqlIO.getResultSet(MysqlIO.java:379)
at com.mysql.jdbc.MysqlIO.readResultsForQueryOrUpdate(MysqlIO.java:1970)
at com.mysql.jdbc.MysqlIO.readAllResults(MysqlIO.java:1387)
at com.mysql.jdbc.ServerPreparedStatement.serverExecute(ServerPreparedStatement.java:1195)
- locked <0x83f596a0> (a java.lang.Object)
at com.mysql.jdbc.ServerPreparedStatement.executeInternal(ServerPreparedStatement.java:693)
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1266)
- locked <0x83f596a0> (a java.lang.Object)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:96)
at org.apache.commons.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:96)
.........
.........
Locked ownable synchronizers:
- None
关系环境如下:
mysql:5.1.56 mysql jdbc驱动程序:MySQL Connector/J 5.0.4 DBCP 1.4
mysql: 5.1.56 mysql jdbc driver: MySQL Connector/J 5.0.4 DBCP 1.4
关于可能是什么原因的任何想法?
Any ideas on what could be the cause?
谢谢
推荐答案
这是由死锁引起的.尝试读取未提交的数据.就我而言,数据位于数据库架构上,因为我尝试执行的操作是ALTER TABLE.
This is caused by a deadlock. There is an uncommited data trying to be read. Im my case the data was on database schema, since the operations I was trying to do is an ALTER TABLE.
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