[HBASE-18529] Do not delete the tmp jars dir when load the coprocessor jar

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: Coprocessors
• Assignee: Yun Zhao
• Reporter: Yun Zhao
• Created: 07/Aug/17 11:16
• Updated: 24/Aug/17 22:50

Description

When multi regionserver is deployed on a single server, used default hbase.local.dir . The tmp jars dir will deleted when one of them is restarted.
Also when multi regionserver start at the same time, the jar in the copyToLocalFile process may be deleted, causing the coprocessor load failed.

2017-08-06 20:02:15,326 ERROR [RS_OPEN_REGION-xxxx-2] regionserver.RegionCoprocessorHost: Failed to load coprocessor xxxx
ENOENT: No such file or directory
        at org.apache.hadoop.io.nativeio.NativeIO$POSIX.chmodImpl(Native Method)
        at org.apache.hadoop.io.nativeio.NativeIO$POSIX.chmod(NativeIO.java:226)
        at org.apache.hadoop.fs.RawLocalFileSystem.setPermission(RawLocalFileSystem.java:629)
        at org.apache.hadoop.fs.FilterFileSystem.setPermission(FilterFileSystem.java:467)
        at org.apache.hadoop.fs.ChecksumFileSystem.create(ChecksumFileSystem.java:456)
        at org.apache.hadoop.fs.ChecksumFileSystem.create(ChecksumFileSystem.java:424)
        at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:906)
        at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:887)
        at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:784)
        at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:365)
        at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:338)
        at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:289)
        at org.apache.hadoop.fs.FileSystem.copyToLocalFile(FileSystem.java:1968)
        at org.apache.hadoop.fs.FileSystem.copyToLocalFile(FileSystem.java:1937)
        at org.apache.hadoop.fs.FileSystem.copyToLocalFile(FileSystem.java:1913)
        at org.apache.hadoop.hbase.util.CoprocessorClassLoader.init(CoprocessorClassLoader.java:168)
        at org.apache.hadoop.hbase.util.CoprocessorClassLoader.getClassLoader(CoprocessorClassLoader.java:250)