merrimanr commented on a change in pull request #1365: Metron-2050:
Automatically populate a list of enrichments from HBase
URL: https://github.com/apache/metron/pull/1365#discussion_r273094589
##########
File path:
metron-platform/metron-hbase/src/main/java/org/apache/metron/hbase/client/HBaseClient.java
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@@ -302,4 +303,35 @@ private static String tableName(HTableInterface table) {
}
return tableName;
}
+
+ /**
+ * Puts a record into the configured HBase table synchronously (not batched).
+ */
+ public void put(String rowKey, String columnFamily, String columnQualifier,
String value)
+ throws IOException {
+ Put put = new Put(Bytes.toBytes(rowKey));
+ put.addColumn(Bytes.toBytes(columnFamily), Bytes.toBytes(columnQualifier),
+ Bytes.toBytes(value));
+ table.put(put);
+ }
+
+ /**
+ * Scans an entire table returning all row keys as a List of Strings.
+ *
+ * <p>
+ * <b>**WARNING**:</b> Do not use this method unless you're absolutely
crystal clear about the performance
+ * impact. Doing full table scans in HBase can adversely impact performance.
+ *
+ * @return List of all row keys as Strings for this table.
+ */
+ public List<String> readRecords() throws IOException {
Review comment:
I was thinking a configurable limit that would break out of the scan loop
after a threshold is reached. Looks like there would be more work involved
though to pass in a config so I think a note is fine.
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