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https://issues.apache.org/jira/browse/CLOUDSTACK-5949?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Koushik Das resolved CLOUDSTACK-5949.
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Resolution: Fixed
> Remove unused field vnc_password from user_vm_view
> --------------------------------------------------
>
> Key: CLOUDSTACK-5949
> URL: https://issues.apache.org/jira/browse/CLOUDSTACK-5949
> Project: CloudStack
> Issue Type: Bug
> Security Level: Public(Anyone can view this level - this is the
> default.)
> Components: Management Server
> Affects Versions: 4.3.0
> Reporter: Koushik Das
> Assignee: Koushik Das
> Priority: Critical
> Fix For: 4.3.0
>
>
> vnc_password is an encrypted field. During any list VM query this field is
> decrypted and then returned. In a scaled up environment if many simultaneous
> list VM queries are run then this may result in blocked threads as shown
> below. A single instance of StandardPBEByteEncryptor is used for
> encryption/decryption. Due to this all decrypt calls during list VM queries
> get blocked as the decrypt method is thread safe (see
> http://www.jasypt.org/api/jasypt/1.8/org/jasypt/encryption/pbe/StandardPBEStringEncryptor.html)
> "catalina-exec-83" daemon prio=10 tid=0x00007eff300b1000 nid=0x6b9e waiting
> for monitor entry [0x00007efee294a000]
> java.lang.Thread.State: BLOCKED (on object monitor)
> at
> org.jasypt.encryption.pbe.StandardPBEByteEncryptor.decrypt(StandardPBEByteEncryptor.java:962)
> waiting to lock <0x000000070416a398> (a javax.crypto.Cipher)
> at
> org.jasypt.encryption.pbe.StandardPBEStringEncryptor.decrypt(StandardPBEStringEncryptor.java:725)
> at com.cloud.utils.crypt.DBEncryptionUtil.decrypt(DBEncryptionUtil.java:65)
> at com.cloud.utils.db.GenericDaoBase.setField(GenericDaoBase.java:511)
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