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https://issues.apache.org/jira/browse/HADOOP-1969?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12531570
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Doug Cutting commented on HADOOP-1969:
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Perhaps this should use a static ThreadLocal instead, so that encoders and
decoders are reused per thread?
> org.apache.hadoop.io.Text uses static ChasetDecoders, but they aren't
> thread-safe
> ---------------------------------------------------------------------------------
>
> Key: HADOOP-1969
> URL: https://issues.apache.org/jira/browse/HADOOP-1969
> Project: Hadoop
> Issue Type: Bug
> Components: io
> Affects Versions: 0.14.0
> Reporter: Colin Evans
>
> org.apache.hadoop.io.Text uses static instances Text.DECODER and Text.ENCODER
> for all encoding and decoding, but these classes are not thread-safe.
> Multiple threads calling Text.toString() at the same time can cause the
> decoders to output jumbled and garbage data.
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