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Chen Liang commented on HDFS-11850: ----------------------------------- Thanks [~msingh] for working on this! v001 patch LGTM, will commit this shortly. > Ozone: Stack Overflow in XceiverClientManager because of race condition in > accessing openClient > ----------------------------------------------------------------------------------------------- > > Key: HDFS-11850 > URL: https://issues.apache.org/jira/browse/HDFS-11850 > Project: Hadoop HDFS > Issue Type: Sub-task > Components: ozone > Reporter: Mukul Kumar Singh > Assignee: Mukul Kumar Singh > Attachments: HDFS-11850-HDFS-7240.001.patch > > > There is a possible race condition in accessing the open client has, it is > because of unlocked access of the hash in acquireClient. > This can cause stack overflow and also leaking client in all probabilities > {code} > at > com.google.common.cache.LocalCache$Segment.put(LocalCache.java:3019) > at com.google.common.cache.LocalCache.put(LocalCache.java:4365) > at > com.google.common.cache.LocalCache$LocalManualCache.put(LocalCache.java:5077) > at > org.apache.hadoop.scm.XceiverClientManager$1.onRemoval(XceiverClientManager.java:85) > at > com.google.common.cache.LocalCache.processPendingNotifications(LocalCache.java:1966) > at > com.google.common.cache.LocalCache$Segment.runUnlockedCleanup(LocalCache.java:3650) > at > com.google.common.cache.LocalCache$Segment.postWriteCleanup(LocalCache.java:3626) > at > com.google.common.cache.LocalCache$Segment.put(LocalCache.java:3019) > at com.google.common.cache.LocalCache.put(LocalCache.java:4365) > at > com.google.common.cache.LocalCache$LocalManualCache.put(LocalCache.java:5077) > at > org.apache.hadoop.scm.XceiverClientManager$1.onRemoval(XceiverClientManager.java:85) > at > com.google.common.cache.LocalCache.processPendingNotifications(LocalCache.java:1966) > at > com.google.common.cache.LocalCache$Segment.runUnlockedCleanup(LocalCache.java:3650) > at > com.google.common.cache.LocalCache$Segment.postWriteCleanup(LocalCache.java:3626) > at > com.google.common.cache.LocalCache$Segment.put(LocalCache.java:3019) > at com.google.common.cache.LocalCache.put(LocalCache.java:4365) > at > com.google.common.cache.LocalCache$LocalManualCache.put(LocalCache.java:5077) > at > org.apache.hadoop.scm.XceiverClientManager$1.onRemoval(XceiverClientManager.java:85) > at > com.google.common.cache.LocalCache.processPendingNotifications(LocalCache.java:1966) > at > com.google.common.cache.LocalCache$Segment.runUnlockedCleanup(LocalCache.java:3650) > {code} -- This message was sent by Atlassian JIRA (v6.3.15#6346) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org