一、java.lang.IllegalAccessError: tried to access method com.google.common.base.Stopwatch.()V from class org.apache.hadoop.hbase.zookeeper.MetaTableLocator

hbase put時，出現以下異常：

java.lang.IllegalAccessError: tried to access method com.google.common.base.Stopwatch.<init>()V from class org.apache
 
.hadoop.hbase.zookeeper.MetaTableLocator

    at org.apache.hadoop.hbase.zookeeper.MetaTableLocator.blockUntilAvailable(MetaTableLocator.java:604)
    at org.apache.hadoop.hbase.zookeeper.MetaTableLocator.blockUntilAvailable(MetaTableLocator.java:588)
    at org.apache.hadoop.hbase.zookeeper.MetaTableLocator
 
.blockUntilAvailable(MetaTableLocator.java:561)
    at org.apache.hadoop.hbase.client.ZooKeeperRegistry.getMetaRegionLocation(ZooKeeperRegistry.java:61)
    at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateMeta(ConnectionManager.java:1211)
    at org.apache.hadoop.hbase
 
.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1178)
    at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.relocateRegion(ConnectionManager.java:1152)
    at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegionInMeta(ConnectionManager.java:1357)
    at org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1181)
    at org.apache.hadoop.hbase.client.AsyncProcess.submit(AsyncProcess.java:410)
    at org.apache.hadoop.hbase.client.AsyncProcess.submit(AsyncProcess.java:359)
    at org.apache.hadoop.hbase.client.BufferedMutatorImpl.backgroundFlushCommits(BufferedMutatorImpl.java:238)
    at org.apache.hadoop.hbase.client.BufferedMutatorImpl.flush(BufferedMutatorImpl.java:190)
    at org.apache.hadoop.hbase.client.HTable.flushCommits(HTable.java:1434)
    at org.apache.hadoop.hbase.client.HTable.put(HTable.java:1018)
    at hbase.HbaseDemo.testPut(HbaseDemo.java:65)

首先確認，Stopwatch在google的guava包下，果斷開始查guava，發現專案裡有多個版本的guava，用maven exclusion排除所有guava，然後單獨加入guava依賴

注，guava17開始，constructors發生變化，如果確認當前專案只有一個guava包，需確認版本問題。

測試，hbase1.2.1：guava12-16，執行無誤；guava17開始，同樣出現標題異常