at

WARN run, .$AcquireTask@b72a5e -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30). Last acquisition attempt exception:
: null, message from server: "Host '172.16.8.2' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'"
at (:1078)
at (:989)
at (:975)
at (:1110)
at (:2483)
at (:2516)
at (:2301)
at .<init>(:834)
at .JDBC4Connection.<init>(:47)
at .(Unknown Source)
at (:45)
at (:525)
at (:411)
at (:416)
at (:317)
at .v2.(:135)
at .v2.(:182)
at .v2.(:171)
at .v2..C3P0PooledConnectionPool$(:137)
at .(:1014)
at .$800(:32)
at .$(:1810)
at .$(:547)
WARN configure, HHH000342: Could not obtain connection to query metadata : Connections could not be acquired from the underlying database!
ERROR prepareTestInstance, Caught exception while allowing TestExecutionListener [@1b1bfe0] to prepare test instance [@ac3714]
: Failed to load ApplicationContext
at (:99)
at (:122)
at (:109)
at (:75)
at (:312)
at .junit4.(:211)
at .junit4.SpringJUnit4ClassRunner$(:288)
at (:15)
at .junit4.(:284)
at .junit4.(:231)
at .junit4.(:88)
at $(:193)
at $(:52)
at (:191)
at $000(:42)
at $(:184)
at .(:61)
at .(:71)
at (:236)
at .junit4.(:174)
at ..(:50)
at (:38)
at (:467)
at (:683)
at (:390)
at (:197)
Caused by: : Error creating bean with name 'sessionFactory' defined in class path resource []: Invocation of init method failed; nested exception is : Connection cannot be null when '' not set
at (:1482)
at (:521)
at (:458)
at $(:295)
at (:223)
at (:292)
at (:194)
at (:610)
at (:932)
at (:479)
at (:120)
at (:60)
at (:100)
at (:248)
at (:64)
at (:91)
... 25 more
Caused by: : Connection cannot be null when '' not set
at (:97)
at (:67)
at (:170)
at (:75)
at (:159)
at (:131)
at (:1797)
at (:1755)
at (:1840)
at .(:247)
at .(:373)
at .(:358)
at (:1541)
at (:1479)
... 40 more