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Zhihong Yu updated HBASE-5290: ------------------------------ Resolution: Fixed Status: Resolved (was: Patch Available) > [FindBugs] Synchronization on boxed primitive > --------------------------------------------- > > Key: HBASE-5290 > URL: https://issues.apache.org/jira/browse/HBASE-5290 > Project: HBase > Issue Type: Bug > Affects Versions: 0.94.0 > Reporter: Liyin Tang > Assignee: Ben West > Priority: Minor > Fix For: 0.94.0 > > Attachments: 5290-v3.txt, 5290-v4.txt, HBASE-5290.patch, > HBASE-5290.patch, HBASE-5290v2.patch > > > This bug is reported by the findBugs tool, which is a static analysis tool. > Bug: Synchronization on Integer in > org.apache.hadoop.hbase.regionserver.compactions.CompactSelection.emptyFileList() > The code synchronizes on a boxed primitive constant, such as an Integer. > {code} > private static Integer count = 0; > ... > synchronized(count) { > count++; > } > ... > {code} > Since Integer objects can be cached and shared, this code could be > synchronizing on the same object as other, unrelated code, leading to > unresponsiveness and possible deadlock > See CERT CON08-J. Do not synchronize on objects that may be reused for more > information. > Confidence: Normal, Rank: Troubling (14) > Pattern: DL_SYNCHRONIZATION_ON_BOXED_PRIMITIVE > Type: DL, Category: MT_CORRECTNESS (Multithreaded correctness) -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira