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https://issues.apache.org/jira/browse/HADOOP-18596?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17735771#comment-17735771
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Wei-Chiu Chuang edited comment on HADOOP-18596 at 6/22/23 8:30 PM:
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Hi [~mehakmeetSingh] in case you missed the Hadoop 3.3.6 vote thread in the
Hadoop dev mailing lists,
here's the excerpt:
{quote}hbase-filesystem has three test failures in TestHBOSSContractDistCp, and
is not reproducible with Hadoop 3.3.5.
{quote}
{quote}[ERROR] Failures: [ERROR]
TestHBOSSContractDistCp>AbstractContractDistCpTest.testDistCpUpdateCheckFileSkip:976->Assert.fail:88
10 errors in file of length 10
{quote}
{quote}[ERROR]
TestHBOSSContractDistCp>AbstractContractDistCpTest.testUpdateDeepDirectoryStructureNoChange:270->AbstractContractDistCpTest.assertCounterInRange:290->Assert.assertTrue:41->Assert.fail:88
Files Skipped value 0 too below minimum 1
{quote}
{quote}[ERROR]
TestHBOSSContractDistCp>AbstractContractDistCpTest.testUpdateDeepDirectoryStructureToRemote:259->AbstractContractDistCpTest.distCpUpdateDeepDirectoryStructure:334->AbstractContractDistCpTest.assertCounterInRange:294->Assert.assertTrue:41->Assert.fail:88
Files Copied value 2 above maximum 1
{quote}
{quote}[INFO]
{quote}
{quote}[ERROR] Tests run: 240, Failures: 3, Errors: 0, Skipped: 58
{quote}
{quote}
{quote}
{quote}
{quote}
was (Author: jojochuang):
Hi [~mehakmeetSingh] in case you missed the Hadoop 3.3.6 vote thread in the
Hadoop dev mailing lists,
here's the excerpt:
[ERROR] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 9.007 s
<<< FAILURE! - in org.apache.hadoop.hbase.regionserver.TestSyncTimeRangeTracker
[ERROR]
org.apache.hadoop.hbase.regionserver.TestSyncTimeRangeTracker.testConcurrentIncludeTimestampCorrectness
Time elapsed: 3.13 s <<< ERROR!
java.lang.OutOfMemoryError: Java heap space
at
org.apache.hadoop.hbase.regionserver.TestSyncTimeRangeTracker$RandomTestData.<init>(TestSyncTimeRangeTracker.java:91)
at
org.apache.hadoop.hbase.regionserver.TestSyncTimeRangeTracker.testConcurrentIncludeTimestampCorrectness(TestSyncTimeRangeTracker.java:156)
bq. hbase-filesystem has three test failures in TestHBOSSContractDistCp, and is
not reproducible with Hadoop 3.3.5.
bq. [ERROR] Failures: [ERROR]
TestHBOSSContractDistCp>AbstractContractDistCpTest.testDistCpUpdateCheckFileSkip:976->Assert.fail:88
10 errors in file of length 10
bq. [ERROR]
TestHBOSSContractDistCp>AbstractContractDistCpTest.testUpdateDeepDirectoryStructureNoChange:270->AbstractContractDistCpTest.assertCounterInRange:290->Assert.assertTrue:41->Assert.fail:88
Files Skipped value 0 too below minimum 1
bq. [ERROR]
TestHBOSSContractDistCp>AbstractContractDistCpTest.testUpdateDeepDirectoryStructureToRemote:259->AbstractContractDistCpTest.distCpUpdateDeepDirectoryStructure:334->AbstractContractDistCpTest.assertCounterInRange:294->Assert.assertTrue:41->Assert.fail:88
Files Copied value 2 above maximum 1
bq. [INFO]
bq. [ERROR] Tests run: 240, Failures: 3, Errors: 0, Skipped: 58
bq.
bq.
> Distcp -update between different cloud stores to use modification time while
> checking for file skip.
> ----------------------------------------------------------------------------------------------------
>
> Key: HADOOP-18596
> URL: https://issues.apache.org/jira/browse/HADOOP-18596
> Project: Hadoop Common
> Issue Type: Improvement
> Components: tools/distcp
> Reporter: Mehakmeet Singh
> Assignee: Mehakmeet Singh
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.3.6
>
>
> Distcp -update currently relies on File size, block size, and Checksum
> comparisons to figure out which files should be skipped or copied.
> Since different cloud stores have different checksum algorithms we should
> check for modification time as well to the checks.
> This would ensure that while performing -update if the files are perceived to
> be out of sync we should copy them. The machines between which the file
> transfers occur should be in time sync to avoid any extra copies.
> Improving testing and documentation for modification time checks between
> different object stores to ensure no incorrect skipping of files.
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