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https://issues.apache.org/jira/browse/HBASE-17212?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15711089#comment-15711089
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Yu Li commented on HBASE-17212:
-------------------------------
Thanks for review sir.
> Should add null checker on table name in HTable constructor and
> RegionServerCallable
> ------------------------------------------------------------------------------------
>
> Key: HBASE-17212
> URL: https://issues.apache.org/jira/browse/HBASE-17212
> Project: HBase
> Issue Type: Improvement
> Affects Versions: 2.0.0
> Reporter: Yu Li
> Assignee: Yu Li
> Fix For: 2.0.0, 1.4.0
>
> Attachments: HBASE-17212.addendum.patch, HBASE-17212.addendum.patch,
> HBASE-17212.patch, HBASE-17212.v2.patch
>
>
> If we run below codes:
> {code}
> Table table = connection.getTable(null);
> {code}
> we will see below exception:
> {noformat}
> java.lang.NullPointerException
> at org.apache.hadoop.hbase.client.HTable.finishSetup(HTable.java:221)
> at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:182)
> at
> org.apache.hadoop.hbase.client.ConnectionImplementation.getTable(ConnectionImplementation.java:298)
> at
> org.apache.hadoop.hbase.client.ConnectionImplementation.getTable(ConnectionImplementation.java:293)
> {noformat}
> And in this JIRA we will add a null checker and throw a more graceful
> {{IllegalArgumentException}}
> For RegionServerCallable, we're lacking of some null checker when using table
> name, such as in {{RegionServerCallable#prepare}}:
> {code}
> public void prepare(final boolean reload) throws IOException {
> // check table state if this is a retry
> if (reload && !tableName.equals(TableName.META_TABLE_NAME) &&
> getConnection().isTableDisabled(tableName)) {
> throw new TableNotEnabledException(tableName.getNameAsString() + " is
> disabled.");
> }
> {code}
> It will throw NPE if tableName is null and invoking {{tableName.equals}}.
> We'll add null checker in such places.
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