Case 01, Query 0003_selectMetadataForOneGalaxy.sql : **************************************************** Join between Source an Object : .. code-block:: bash :emphasize-lines: 1 mysql> SELECT s.ra, s.decl, o.raRange, o.declRange FROM Object o JOIN Source s USING (objectId) WHERE o.objectId = 390034570102582 AND o.latestObsTime = s.taiMidPoint; ERROR 4120 (Proxy): Error during execution: 'open failed for chunk(s): 6801 6630 6800 7138 7308 6970 6971 6968 6631 7140read failed for chunk(s): 7478 7648 7310' Log files are available here : * :download:`xrootd.log ` * :download:`qserv-master.log ` Here's an extract of qserv-master.log : .. literalinclude:: /_static/C01_Q0003/qserv-master.log :language: python :lines: 69-82 :emphasize-lines: 7 Here's an extract of xrootd.log : .. literalinclude:: /_static/C01_Q0003/xrootd.log :language: python :lines: 49-60 :emphasize-lines: 9 It seems that the parser forgot to add the Source table in the FROM clause while rewriting the query. Case 01, Query 0004_lightCurve.sql ********************************** Join between Source and Filter : .. code-block:: bash :emphasize-lines: 1 mysql> SELECT taiMidPoint, psfFlux, psfFluxSigma, ra, decl FROM Source JOIN Filter USING (filterId) WHERE objectId = 402412665835716 AND filterName = 'r'; ERROR 4110 (Proxy): Qserv error: 'mysqld error during index lookup q=SELECT chunkId FROM qservMeta.LSST__Source WHERE objectId IN (402412665835716)' Log files are available here : * :download:`xrootd.log ` * :download:`qserv-master.log ` Here the description of qservMeta.LSST__Source table : .. code-block:: bash :emphasize-lines: 1 mysql> desc LSST__Source; +------------+------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +------------+------------+------+-----+---------+-------+ | sourceId | bigint(20) | NO | PRI | NULL | | | chunkId | int(11) | YES | | NULL | | | subChunkId | int(11) | YES | | NULL | | +------------+------------+------+-----+---------+-------+ 3 rows in set (0.00 sec) Could you please give me the exact structure of LSST_Source table ?