You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@hbase.apache.org by "Ted Yu (JIRA)" <ji...@apache.org> on 2018/06/01 09:37:00 UTC
[jira] [Created] (HBASE-20668) Exception from FileSystem operation
in finally block of ExportSnapshot#doWork may hide exception from
FileUtil.copy call
Ted Yu created HBASE-20668:
------------------------------
Summary: Exception from FileSystem operation in finally block of ExportSnapshot#doWork may hide exception from FileUtil.copy call
Key: HBASE-20668
URL: https://issues.apache.org/jira/browse/HBASE-20668
Project: HBase
Issue Type: Bug
Reporter: Ted Yu
Assignee: Ted Yu
I was debugging the following error [~romil.choksi] saw during testing ExportSnapshot :
{code}
2018-06-01 02:40:52,363|INFO|MainThread|machine.py:167 - run()||GUID=1cacb7bc-f7cc-4710-82e0-4a4513f0c1f9|2018-06-01 02:40:52,358 ERROR [main] util.AbstractHBaseTool: Error running command-line tool
2018-06-01 02:40:52,363|INFO|MainThread|machine.py:167 - run()||GUID=1cacb7bc-f7cc-4710-82e0-4a4513f0c1f9|java.io.FileNotFoundException: Directory/File does not exist /apps/ hbase/data/.hbase-snapshot/.tmp/snapshot_table_334546
2018-06-01 02:40:52,364|INFO|MainThread|machine.py:167 - run()||GUID=1cacb7bc-f7cc-4710-82e0-4a4513f0c1f9|at org.apache.hadoop.hdfs.server.namenode.FSDirectory. checkOwner(FSDirectory.java:1777)
2018-06-01 02:40:52,364|INFO|MainThread|machine.py:167 - run()||GUID=1cacb7bc-f7cc-4710-82e0-4a4513f0c1f9|at org.apache.hadoop.hdfs.server.namenode.FSDirAttrOp. setOwner(FSDirAttrOp.java:82)
{code}
Here is corresponding code (with extra log added):
{code}
try {
LOG.info("Copy Snapshot Manifest from " + snapshotDir + " to " + initialOutputSnapshotDir);
boolean ret = FileUtil.copy(inputFs, snapshotDir, outputFs, initialOutputSnapshotDir, false,
false, conf);
LOG.info("return val = " + ret);
} catch (IOException e) {
LOG.warn("Failed to copy the snapshot directory: from=" +
snapshotDir + " to=" + initialOutputSnapshotDir, e);
throw new ExportSnapshotException("Failed to copy the snapshot directory: from=" +
snapshotDir + " to=" + initialOutputSnapshotDir, e);
} finally {
if (filesUser != null || filesGroup != null) {
LOG.warn((filesUser == null ? "" : "Change the owner of " + needSetOwnerDir + " to "
+ filesUser)
+ (filesGroup == null ? "" : ", Change the group of " + needSetOwnerDir + " to "
+ filesGroup));
setOwner(outputFs, needSetOwnerDir, filesUser, filesGroup, true);
}
{code}
"return val = " was not seen in rerun of the test.
This is what the additional log revealed:
{code}
2018-06-01 09:22:54,247|INFO|MainThread|machine.py:167 - run()||GUID=3961d249-9981-429d-81a8-39c7df53cf58|2018-06-01 09:22:54,241 WARN [main] snapshot.ExportSnapshot: Failed to copy the snapshot directory: from=hdfs://ns1/apps/hbase/data/.hbase-snapshot/snapshot_table_157842 to=hdfs://ns3/apps/hbase/data/.hbase-snapshot/.tmp/snapshot_table_157842
2018-06-01 09:22:54,248|INFO|MainThread|machine.py:167 - run()||GUID=3961d249-9981-429d-81a8-39c7df53cf58|org.apache.hadoop.security.AccessControlException: Permission denied: user=hbase, access=WRITE, inode="/apps/hbase/data/.hbase-snapshot/.tmp":hrt_qa:hadoop:dr----x-wT
2018-06-01 09:22:54,248|INFO|MainThread|machine.py:167 - run()||GUID=3961d249-9981-429d-81a8-39c7df53cf58|at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker. check(FSPermissionChecker.java:399)
2018-06-01 09:22:54,249|INFO|MainThread|machine.py:167 - run()||GUID=3961d249-9981-429d-81a8-39c7df53cf58|at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker. checkPermission(FSPermissionChecker.java:255)
{code}
It turned out that the exception from {{setOwner}} call in the finally block eclipsed the real exception.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)