Tian Hong Wang created HDFS-4681:
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Summary:
TestBlocksWithNotEnoughRacks#testCorruptBlockRereplicatedAcrossRacks fails
using IBM java
Key: HDFS-4681
URL: https://issues.apache.org/jira/browse/HDFS-4681
Project: Hadoop HDFS
Issue Type: Bug
Components: test
Reporter: Tian Hong Wang
Fix For: 2.0.3-alpha
TestBlocksWithNotEnoughRacks unit test fails with the following error message:
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testCorruptBlockRereplicatedAcrossRacks(org.apache.hadoop.hdfs.server.blockmanagement.TestBlocksWithNotEnoughRacks)
Time elapsed: 8997 sec <<< FAILURE!
org.junit.ComparisonFailure: Corrupt replica
expected:<...��^EI�u�[�{���[$�\hF�[�R{O�L^S��g�#�O����Wv��6u4Hd)FaŔ��^W�0��H/�^ZU^@�6�<02>���":)$�{|�^@�-���|GvW��7g
�/M��[U!eF�>^N^?�4pR�d��|��Ŵ7j^O^Sh�^@�nu�(�^C^Y�;I�Q�K^O����"c���
oKtE�*�����^\3u��]Ē:mŭ^^y�����^H��_^T�^Z����S����4�7�C�^G�_���\|^W�vo���zgU�lmJ)_vq~�+^Mo^G^O�W}�.�4����
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was:<...��^EI�u�[�{���[$�\hF�[R{O�L^S��g�#�O����Wv��6u4Hd)FaŔ��^W�0��H/�^ZU^@�6�<02>�":)$�{|�^@�-���|GvW��7g
�/M�[U!eF�>^N^?�4pR�d��|��Ŵ7j^O^Sh�^@�nu�(�^C^Y�;I�Q�K^O����"c���
oKtE�*�����^\3u��]Ē:mŭ^^y���^H��_^T�^Z����S���4�7�C�^G�_���\|^W�vo���zgU�lmJ)_vq~�+^Mo^G^O�W}�.�4����
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at org.junit.Assert.assertEquals(Assert.java:123)
at
org.apache.hadoop.hdfs.server.blockmanagement.TestBlocksWithNotEnoughRacks.testCorruptBlockRereplicatedAcrossRacks(TestBlocksWithNotEnoughRacks.java:229)
The root cause is that the unit test code uses in.read() method to read the
block content char by char., which will abandon the LF. So the best way is to
use buffer to read the block content.
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