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Posted to common-issues@hadoop.apache.org by "gaozhan ding (Jira)" <ji...@apache.org> on 2020/12/11 10:19:00 UTC
[jira] [Updated] (HADOOP-17430) There is no way to clear Text bytes
now
[ https://issues.apache.org/jira/browse/HADOOP-17430?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
gaozhan ding updated HADOOP-17430:
----------------------------------
Attachment: Add_clear_logic_for_Text.patch
> There is no way to clear Text bytes now
> ---------------------------------------
>
> Key: HADOOP-17430
> URL: https://issues.apache.org/jira/browse/HADOOP-17430
> Project: Hadoop Common
> Issue Type: Wish
> Components: common
> Reporter: gaozhan ding
> Priority: Minor
> Attachments: Add_clear_logic_for_Text.patch
>
>
> In org.apache.hadoop.io.Text:clear() method, the comments show that we can free the bytes by call set(new byte[0]), but it's not going to work now. Maybe we can follow this comments.
>
>
> {code:java}
> // org.apache.hadoop.io.Text
> /**
> * Clear the string to empty.
> *
> * <em>Note</em>: For performance reasons, this call does not clear the
> * underlying byte array that is retrievable via {@link #getBytes()}.
> * In order to free the byte-array memory, call {@link #set(byte[])}
> * with an empty byte array (For example, <code>new byte[0]</code>).
> */
> public void clear() {
> length = 0;
> textLength = -1;
> }
> {code}
>
>
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